LONG PROM DRESSES, LONG FORMAL DRESSES, AND LONG PROM GOWNS

Browse our large selection of elegant long prom dresses, and find the perfect long formal dresses for your prom. At PromGirl you will find many long prom dresses and gowns from the top formal dress designers and manufacturers.  A long dress makes an elegant statement at any formal event whether it is prom, a formal dance, or wedding. Shop our huge selection of long dresses, and you will find long elegant dresses priced to fit every budget. Whatever the event you are looking for, we have your perfect long dress.

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In Stock Buy Floor Length Strapless Dress at PromGirl
  • Neon Salmon

Strapless Blue Maxi Dress by City Triangles

$49.00 $19.00 CT-9500M64Deb
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In Stock Buy Strapless Glitter Peplum Dress at PromGirl
  • Coral

Coral Glitter Peplum Dress

$129.00 $29.00 EM-CHL-1023-680
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In Stock Buy Short Sleeveless Scoop Neck Dress D0676169 by Bee Darlin at PromGirl
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In Stock Buy Floor Length Strapless Dress by City Triangles at PromGirl
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In Stock Buy Floor Length Spaghetti Strap Dress by Jump at PromGirl
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In Stock Buy SY-ID3000 at PromGirl
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In Stock Buy NA-2592-v at PromGirl
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In Stock Buy MB-6929 at PromGirl
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In Stock Buy Long Spaghetti Strap Dress with Jewel Embellished Bodice by Bee Darlin at PromGirl
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In Stock Buy V-Neck Cut-Out Chiffon Jumpsuit at PromGirl
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In Stock Buy MB-6727 at PromGirl
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In Stock Buy MB-7020 at PromGirl
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In Stock Buy Sleeveless Royal Blue Jumpsuit at PromGirl
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In Stock Buy Sleeveless Floor Length Lace Dress by Jump at PromGirl
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In Stock Buy Strapless Formal Dress by Sally Fashion at PromGirl
  • Royal
  • White

Long Formal Gown 29283

$99.00 $49.00 SF-29283
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In Stock Buy Floor Length Strapless Sweetheart Dress by LA Glo at PromGirl
  • Neon Pink

Floor Length Strapless Dress by LA Glo

$149.00 $49.00 LA-23084
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In Stock Buy Long Sleeveless V-Neck Dress by Wow Couture at PromGirl
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In Stock Buy Floor Length Sleeveless Empire Waist Chiffon Dress by City Triangles at PromGirl
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In Stock Buy Floor Length Strapless Sweetheart Dress by City Triangles at PromGirl
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In Stock Buy Floor Length Pleated Strapless Sweetheart Dress by Sequin Hearts at PromGirl
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In Stock Buy Long One Shoulder Prom Dress at PromGirl
  • Black/White

Long One Shoulder Prom Dress

$89.00 $49.00 DQ-9030
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In Stock Buy Floor Length Sleeveless Dress at PromGirl
  • Beige

Sleek Open Back Gown for Prom

$99.00 $49.00 TW-4066
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In Stock Buy Floor Length Sleeveless Pleated Dress at PromGirl
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In Stock Buy TW-4133-v at PromGirl
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In Stock Buy TW-4116 at PromGirl
  • Jade

Purple All Over Lace Long Prom Dress

$99.00 $49.00 TW-4116-v
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In Stock Buy Scoop Neck Open Back Prom Dress at PromGirl
  • Taupe

Scoop Neck Open Back Prom Dress

$129.00 $49.00 MT-7365-v
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In Stock Buy Floor Length Cap Sleeve Lace Dress by Sequin Hearts at PromGirl
  • Mint/Silver

Long Lace Gown for Prom by Sequin Hearts

$149.00 $59.00 MY-6218xy1n
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In Stock Buy V-Neck Sleeveless Prom Dress with High Slit at PromGirl
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In Stock Buy Sleeveless Royal Blue V-Neck Dress at PromGirl
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In Stock Buy Loden Green Long Sleeve Ankle Length Dress at PromGirl
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In Stock Buy Black Halter Jumpsuit 3422RK at PromGirl
  • Black

Black Halter Jumpsuit 3422RK

$59.00 CQ-3422RK
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In Stock Buy Mock Two Piece Floor Length Burgundy Dress at PromGirl
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In Stock Buy Floor Length Spaghetti Strap Dress at PromGirl
  • Black/Ivory

Floor Length Spaghetti Strap Dress

$119.00 $59.00 SI-11470
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In Stock Buy Strapless Sweetheart Floor Length Dress by Sequin Hearts at PromGirl
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In Stock Buy Floor Length One Shoulder Dress by Masquerade at PromGirl
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In Stock Buy Floor Length Strapless Sweetheart Dress by Sequin Hearts at PromGirl
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In Stock Buy Floor Length Sleeveless Sequin Hearts Dress with Jewel Detailing at PromGirl
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In Stock Buy Mock Two Piece Dress with Sequin Embellished Bodice at PromGirl
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In Stock Buy Long One Shoulder Ruched Dress at PromGirl
  • Light Teal
  • Green

Elegant One Shoulder Gown for Prom

$99.00 $59.00 DI-15218
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In Stock Buy CQ-4099DW at PromGirl
  • Navy

Long V-Neck Open Back Navy Blue Dress

$129.00 $64.00 CQ-4099DW
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In Stock Buy Floor Length One Shoulder Dress at PromGirl
  • Royal

Long One Shoulder Dress

$129.00 $64.00 DI-15380
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In Stock Buy Lace Floor Length Strapless Sweetheart Dress at PromGirl
  • Eggplant
  • Royal

Long Strapless Lace Dress

$129.00 $64.00 DI-K0347B
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In Stock Buy DQ-8658-v at PromGirl
  • Dusty Lilac
  • Silver

Empire Waist Floor Length Prom Dress

$129.00 $64.00 DQ-8658-v
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In Stock Buy LP-21228 at PromGirl
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In Stock Buy Sleeveless Floor Length Lace Embellished Dress at PromGirl
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In Stock Buy Sleeveless Floor Length Dress with Lace Embellished Neckline at PromGirl
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In Stock Buy CQ-4365DK at PromGirl
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In Stock Buy LP-23239 at PromGirl
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In Stock Buy Floor Length Sleeveless Sequin Hearts Dress with Pleated Skirt at PromGirl
  • Neon Coral

Neon Coral Pleated Dress by Sequin Hearts

$149.00 $69.00 MY-6640SK1S
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In Stock Buy Strapless Sweethear Pleated Floor Length Dress by Sequin Hearts at PromGirl
  • Purple

Long Strapless Prom Dress by Sequin Hearts

$149.00 $69.00 MY-2288SK1S
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In Stock Buy Sleeveless Sequin and Fringe Dress at PromGirl
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In Stock Buy SY-ID2958VP at PromGirl
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In Stock Buy Strapless Sweetheart Floor Length Dress by City Triangles at PromGirl
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In Stock Buy Floor Length Strapless Sweetheart Dress  at PromGirl
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In Stock Buy Dark Teal Floor Length Sleeveless Dress at PromGirl
  • Dark Turquoise

Dark Teal Floor Length Sleeveless Dress

$129.00 $69.00 SI-11341-vt
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In Stock Buy Sleeveless Floor Length V-Neck Dress by Sequin Hearts at PromGirl
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In Stock Buy Long Sleeveless Dress with Jewel Embellished Waist by Sequin Hearts at PromGirl
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In Stock Buy Strapless Sweetheart Plunging Neckline Dress at PromGirl
  • Peach

Strapless Sweetheart Plunging Neckline Dress

$149.00 $74.00 HL-211s62890
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In Stock Buy Floor Length Open Back Ivory Gown by Morgan at PromGirl
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In Stock Buy Floor Length Sleeveless Dress by City Triangles at PromGirl
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In Stock Buy One Shoulder Ruched Dress at PromGirl
  • Royal

Long One Shoulder Prom Dress

$149.00 $74.00 NA-2688
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In Stock Buy Floor Length Sleeveless V-Neck Dress by LA Glo at PromGirl
  • Blue

Sleeveless Blue Prom Gown by LA Glo

$149.00 $75.00 LA-24817
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In Stock Buy Strapless Sweetheart Floor Length Dress by Blondie Nites at PromGirl
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In Stock Buy Floor Length Scoop Neck Prom Dress at PromGirl
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In Stock Buy MO-12023 at PromGirl
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In Stock Buy Floor Length Long Sleeve Black Cut-Out Dress at PromGirl
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In Stock Buy Floor Length Prom Dress 3965 with Ruffles at PromGirl
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In Stock Buy Floor Length Sleeveless Print Maxi Dress at PromGirl
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In Stock Buy Sleeveless Floor Length Dress with Lace Detailing at PromGirl
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In Stock Buy Floor Length Sleeveless Empire Waist Dress at PromGirl
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In Stock Buy Floor Length Strapless Sweetheart Lace Dress by Speechless at PromGirl
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In Stock Buy Flowing Floor Length Prom Dress at PromGirl
  • Black
  • Turquoise
  • Fuchsia
  • Teal

Long Formal Dress for Prom

$149.00 $79.00 DQ-8115-v
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In Stock Buy Floor Length Strapless Sweetheart Dress  by Blondie Nites at PromGirl
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In Stock Buy DQ-8823-v at PromGirl
  • Black

Long V-neck Formal Dress with Sleeves

$169.00 $84.00 DQ-8823-v
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In Stock Buy Floor Length Sleeveless Black V-Neck Dress by Emerald Sundae at PromGirl
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Buy Low Back Long Black Prom Dress with Train at PromGirl
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In Stock Buy Floor Length Short Sleeve Formal Gown at PromGirl
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In Stock Buy SY-ID2982VP at PromGirl
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In Stock Buy CQ-2279DW at PromGirl
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In Stock Buy EM-CIN-1003-001 at PromGirl
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In Stock Buy Floor Length Sequin Embellished Lace Dress at PromGirl
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In Stock Buy SY-ID2722VP at PromGirl
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In Stock Buy Floor Length Ruched Halter Dress at PromGirl
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Buy Sleeveless Scoop Neck Floor Length Dress with Lace Bodice by Morgan at PromGirl
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In Stock Buy SY-ID2594VP at PromGirl
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In Stock Buy Sleeveless Floor Length Lace Dress at PromGirl
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In Stock Buy Floor Length Sleeveless Lace Dress 8804 by Sally Fashion at PromGirl
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In Stock Buy Strapless Sweetheart Floor Length Ombre Dress by Jump at PromGirl
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In Stock Buy Floor Length Lace Halter Dress by Morgan at PromGirl
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In Stock Buy Sleeveless Floor Length Floral Print Dress at PromGirl
  • Ivory Multi

Sleeveless Floor Length Floral Print Dress

$199.00 $89.00 HL-231m66250
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Buy SG-ASACG1ACW at PromGirl
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In Stock Buy SG-ASAIP1AMR at PromGirl
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In Stock Buy Full Length Strapless Formal Gown at PromGirl
  • Gold
  • Fuchsia
  • Lime

Full Length Strapless Formal Gown

$189.00 $94.00 DQ-8116
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In Stock Buy Floor Length Strapless Sweetheart Pleated Dress at PromGirl
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In Stock Buy Sleeveless Open Back Floor Length Gown at PromGirl
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In Stock Buy Floor Length Sleeveless Dress with Sequin and Lace Bodice at PromGirl
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In Stock Buy Floor Length Sleevless Lace Dress at PromGirl
  • Red
  • Royal
  • Black

Long Sleeveless Lace Gown

$99.00 TW-4116
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In Stock Buy Strapless Black and White Dress at PromGirl
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In Stock Buy MB-6987 at PromGirl
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In Stock Buy Floor Length Sleeveless Black Dress at PromGirl
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In Stock Buy Burgundy Lace Floor Length Open Back Dress at PromGirl
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In Stock Buy Long Sleeve Floor Length Lace Dress at PromGirl
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Buy JU-MA-262571i at PromGirl
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In Stock Buy SG-ASAEE1AFB at PromGirl
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In Stock Buy MB-6997 at PromGirl
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In Stock Buy Long Sleeveless Sequin Dress at PromGirl
  • Black
  • Silver
  • Red
  • Royal
  • Rose Gold

Long Sleeveless Sequin Dress

$99.00 DI-JM2018Y
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In Stock Buy LP-23387 at PromGirl
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In Stock Buy Lace Floor Length Sleeveless Dress at PromGirl
  • Black
  • Beige
  • Pink

Long Lace Dress with Slit

$99.00 LP-22888
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In Stock Buy Sleeveless Black Floor Length Open Back Dress at PromGirl
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In Stock Buy Classic Long Strapless Dress at PromGirl
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In Stock Buy MY-2917IT2S at PromGirl
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In Stock Buy Sleeveless Floor Length Dress with Lace Bodice by Morgan at PromGirl
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In Stock Buy Floor Length Sleeveless Sequin Embellished Dress at PromGirl
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In Stock Buy Long One Shoulder Dress at PromGirl
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In Stock Buy TW-4168 at PromGirl
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In Stock Buy Sequin Hearts Black High Neck Empire Waist Prom Dress at PromGirl
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In Stock Buy MY-2659IT1S at PromGirl
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In Stock Buy MD-D14001AB at PromGirl
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In Stock Buy Illusion Bodice Sequin Hearts Two Piece Long Prom Dress with Side Slit at PromGirl
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In Stock Buy MO-12175 at PromGirl
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In Stock Buy LP-23490 at PromGirl
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In Stock Buy Long Lace Dress with Half Sleeves by Sally Fashion at PromGirl
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In Stock Buy JU-48336 at PromGirl
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In Stock Buy SG-ASWiF1AKF at PromGirl
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In Stock Buy MB-6935 at PromGirl
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In Stock Buy LP-23262 at PromGirl
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In Stock Buy LP-23711 at PromGirl
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In Stock Buy One Shoulder Ombre Dress at PromGirl
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In Stock Buy CQ-3714DK at PromGirl
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In Stock Buy Long Lace Short Sleeve Dress at PromGirl
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In Stock Buy SG-ASWiF1AHA at PromGirl
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In Stock Buy MB-6993 at PromGirl
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In Stock Buy MO-12146 at PromGirl
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In Stock Buy LP-23450 at PromGirl
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In Stock Buy MO-12019 at PromGirl
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In Stock Buy LP-23624 at PromGirl
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In Stock Buy LP-23503 at PromGirl
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In Stock Buy Long Sleeveless Bead Embellished Dress by Morgan at PromGirl
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In Stock Buy LP-23669 at PromGirl
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In Stock Buy CQ-4699DK at PromGirl
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In Stock Buy MO-12173 at PromGirl
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In Stock Buy MB-7003 at PromGirl
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In Stock Buy Floor Length Sleeveless Sequin Sheer Prom Dress at PromGirl
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In Stock Buy MT-7535 at PromGirl
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In Stock Buy Sleeveless Floor Length Scoop Neck Dress at PromGirl
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In Stock Buy CQ-2769DK at PromGirl
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In Stock Buy JU-48337 at PromGirl
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In Stock Buy LP-23461 at PromGirl
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In Stock Buy JU-47051 at PromGirl
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In Stock Buy MB-6958 at PromGirl
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In Stock Buy Sleeveless Scoop Neck Floor Length Dress with Adjustable Straps at PromGirl
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In Stock Buy LP-23131 at PromGirl
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In Stock Buy Strapless Floor Length Dress with Sequin Detailed Bodice at PromGirl
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In Stock Buy MB-6324 at PromGirl
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In Stock Buy MB-6966 at PromGirl
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In Stock Buy MB-6925 at PromGirl
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In Stock Buy LP-23036 at PromGirl
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In Stock Buy LP-50004 at PromGirl
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In Stock Buy LP-23397 at PromGirl
* Products with an "in stock" banner have at least some size and color combinations ready to ship immediately. Available sizes and colors may be limited due to seasonality. Please read our complete availability policy for more information.