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.

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

Long Strapless Casual Dress

$49.00 $19.00 CT-9500M64D
In Stock Buy Long Sleeveless Chevron Print Dress at PromGirl
  • Navy/Lime

Long Sleeveless Chevron Print Dress

$49.00 $19.00 EM-CFA-1472
In Stock Buy Sleeveless Long Striped Dress at PromGirl
  • Black/Tan/Coral

Sleeveless Long Striped Dress

$39.00 $19.00 EM-CAG-1116
In Stock Buy Strapless Floor Length Dress at PromGirl
  • Yucca

Strapless Floor Length Dress

$69.00 $19.00 CT-9500W88B
In Stock Buy Floor Length Sleeveless Maxi Dress at PromGirl
  • Mint
  • Coral
  • White

Floor Length Sleeveless Maxi Dress

$39.00 $19.00 DC-42339
In Stock Buy Floor Length Spaghetti Strap Print Dress at PromGirl
  • Cream/Navy

Floor Length Spaghetti Strap Print Dress

$69.00 $19.00 AS-I960450g2
In Stock Buy Long Sleeveless Chevron Print Dress at PromGirl
  • Navy/Multi

Long Sleeveless Chevron Print Dress

$29.00 $19.00 EM-CCX-1571-438
In Stock Buy One Shoulder Casual Print Dress at PromGirl
  • Ivory/Royal

One Shoulder Casual Print Dress

$69.00 $19.00 CT-2631BM1D
In Stock Buy Floor Length Strapless Dress at PromGirl
  • Yucca

Floor Length Strapless Dress

$49.00 $19.00 CT-9500M64F
In Stock Buy Strapless Sweetheart High Low Dress at PromGirl
  • Magenta
  • Coral

Strapless Sweetheart High Low Dress

$69.00 $19.00 MD-D11711GGP
In Stock Buy Floor Length Sleeveless Dress at PromGirl
  • Ivory/Black

Floor Length Sleeveless Dress

$49.00 $25.00 SS-X28701TLV
In Stock Buy Floor Length Strapless Empire Waist Dress at PromGirl
  • Light Yellow

Long Strapless Yellow Dress

$199.00 $29.00 SS-X28751TNY
In Stock Buy Floor Length Spaghetti Strap Dress at PromGirl
  • Black

Floor Length Spaghetti Strap Dress

$49.00 $29.00 JU-47244
In Stock Buy Floor Length Strapless Maxi Dress at PromGirl
  • Black

Floor Length Strapless Maxi Dress

$99.00 $29.00 MT-MD-1010
In Stock Buy Strapless Floor Length Dress with Pleated Skirt at PromGirl
  • Jade

Long Strapless Prom Dress by Bee Darlin

$79.00 $29.00 BD-Q0159172
In Stock Buy Floor Length Strapless Pleated Dress at PromGirl
  • Purple

Strapless Purple Prom Gown with Open Back

$199.00 $39.00 SS-X27091MDU
In Stock Buy Floor Length Strapless Sweetheart Print Dress at PromGirl
  • Purple
  • Fuchsia

Strapless Print Prom Dress

$219.00 $49.00 DQ-8088
In Stock Buy One Shoulder Floor Length Dress at PromGirl
  • Ivory

One Shoulder Floor Length Dress

$149.00 $49.00 MY-3725SK1N
In Stock Buy Floor Length Strapless Sweetheart Dress at PromGirl
  • Turquoise

Strapless Turquoise Blue Prom Dress

$189.00 $49.00 SS-X26641TD9
In Stock Buy Floor Length Deep V-Neck Dress at PromGirl
  • Coral/Gold

Floor Length Deep V-Neck Dress

$250.00 $49.00 X-Xs2608
In Stock Buy One Shoulder Ruched Long Prom Dress at PromGirl
  • Ivory

One Shoulder Ruched Long Prom Dress

$250.00 $49.00 BJ-A59843
In Stock Buy Long Metallic One Shoulder Dress at PromGirl
  • Teal Crush
  • Violet Crush

Long Metallic One Shoulder Dress

$298.00 $49.00 FL-P5863
In Stock Buy Long Strapless Chiffon Formal Gown at PromGirl
  • Ice Blue

Long Strapless Chiffon Formal Gown

$278.00 $49.00 FA-7306
In Stock Buy Long One Shoulder Dress at PromGirl
  • Black
  • Royal Blue

One Shoulder Formal Gown

$229.00 $59.00 DQ-8095
Buy Long Sleeveless Black Dress  at PromGirl
  • Black

Long Sleeveless Black Dress

$59.00 EM-CHY-1027-001
In Stock Buy Floor Length Elegant Halter Gown at PromGirl
  • Dark Coral

Halter Prom Gown

$110.00 $59.00 BD-DYO67007
In Stock Buy Sleeveless Ruched V-Neck Dress at PromGirl
  • Royal

Sleeveless Ruched V-Neck Dress

$129.00 $64.00 BD-DY2611479
In Stock Buy Floor Length Strapless Sweetheart Dress at PromGirl
  • Periwinkle/Nude/Ab

Bee Darlin Strapless Prom Gown

$139.00 $69.00 BD-DY586477
In Stock Buy High Low Sleeveless Dress at PromGirl
  • Jade
  • Black/Peach

High Low Sleeveless Dress

$69.00 DI-DH1005
In Stock Buy Long Blue Dress by XOXO at PromGirl
  • Blue

Long Blue Prom Dress by XOXO

$79.00 XO-2133SSK1
In Stock Buy Black Halter Pantsuit by XOXO at PromGirl
  • Black

Black Halter Pantsuit by XOXO

$79.00 XO-9197MLR8
In Stock Buy Sleeveless Jumpsuit  at PromGirl
  • Black

Sleeveless Jumpsuit

$79.00 WC-SW975
In Stock Buy Long Strapless Metallic Formal Dress at PromGirl
  • Metallic Pearl

Long Strapless Metallic Formal Dress

$298.00 $79.00 FL-P4821
In Stock Buy Long V-Neck Formal Dress at PromGirl
  • Soft Lilac
  • Coral

Floral Lace Prom Dress by Flirt

$348.00 $89.00 FL-P2816
In Stock Buy Long Strapless Open Back Formal Gown at PromGirl
  • Aqua
  • Party Pink

Long Strapless Open Back Formal Gown

$338.00 $89.00 ML-95047
In Stock Buy Strapless Formal Dress at PromGirl
  • Royal
  • Burgundy
  • Black
  • Plum
  • Olive
  • Gold
  • White

Long Formal Gown 29283

$99.00 SF-29283
In Stock Buy Lace Floor Length Strapless Sweetheart Dress at PromGirl
  • Eggplant
  • Champagne
  • Navy
  • Fuchsia
  • Royal

Long Strapless Lace Dress

$99.00 DI-K0347B
In Stock Buy Long One Shoulder Dress at PromGirl
  • Black
  • Plum
  • Brown

One Shoulder Prom Gown

$99.00 DQ-8324
In Stock Buy Strapless Glitter Peplum Dress at PromGirl
  • Coral

Strapless Glitter Peplum Dress

$99.00 EM-CHL-1023-680
* 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.