Sweetheart Formal Gowns and Party Dresses

The PromGirl formal dress collection features both short prom and party dresses and long formal evening gowns with sweetheart necklines. This style of dress features a neckline with two curved edges resembling the shape of a heart. The curve can be sweet and alluring with a small opening or daring and sexy in a low cut style. You will find here halter top dresses, elegant long prom dresses, sweet sixteen party dresses, or sparkling cocktail dresses and little black dresses for the holidays all with sweetheart neckline that are feminine and chic. Theses are dresses you'll want to wear again and again and are sure to become a favorite in any girl's closet. 

In Stock Buy Short Strapless Sweetheart Polka Dot Dress at PromGirl
  • Black/White

Short Strapless Sweetheart Polka Dot Dress

$39.00 $19.00 EM-BCA-1704-020
In Stock Buy Short Spaghetti Strap Dress at PromGirl
  • Black/Ivory

Short Spaghetti Strap Dress

$39.00 $19.00 EM-BCX-1625-006
In Stock Buy Short Strapless Ruched Dress at PromGirl
  • Black

Short Strapless Ruched Dress

$39.00 $19.00 MD-D12157ABC
In Stock Buy Gold Foil Print Dress at PromGirl
  • Gold

Strapless Foil Print Dress

$39.00 $19.00 CL-D40145
In Stock Buy Short Strapless Sweetheart Black Dress at PromGirl
  • Black

Short Strapless Sweetheart Black Dress

$49.00 $24.00 CCC-6P8263
In Stock Buy Strapless Sweetheart Pink Dress at PromGirl
  • Black

Strapless Sweetheart Pink Dress

$49.00 $24.00 EM-DHN-1028-650
In Stock Buy Short Strapless Sweetheart Print Dress at PromGirl
  • White/Neon Pink

Short Strapless Sweetheart Print Dress

$49.00 $24.00 CT-4326DT2A
In Stock Buy Short Strapless Sweetheart Print Dress at PromGirl
  • Black/White

Short Strapless Sweetheart Print Dress

$49.00 $24.00 AS-i796661z8
In Stock Buy Strapless Black Homecoming Dress at PromGirl
  • Black
  • Grey

Strapless Sequin Cocktail Dress

$49.00 $24.00 MP-D0759
In Stock Buy Short Strapless Sweetheart Dress at PromGirl
  • Green/Red

Short Strapless Sweetheart Dress

$49.00 $24.00 CT-2794BG2F
In Stock Buy Strapless Sweetheart Short Dress by XOXO at PromGirl
  • Cobalt

Strapless Blue Cocktail Dress

$79.00 $29.00 XO-2523ST11
In Stock Buy Short Strapless Lace Summer Dress at PromGirl
  • Ivory
  • Peach

Short Strapless Lace Dress

$29.00 TR-D30160
In Stock Buy Short Sleeveless Dress at PromGirl
  • Black
  • Royal Blue
  • Coral

Short Sleeveless Dress

$29.00 CCC-6C9295
In Stock Buy Strapless Semi Formal Dress at PromGirl
  • Taupe

Strapless Semi Formal Dress

$29.00 MD-D11005GGP
In Stock Buy Short Strapless Lace Dress at PromGirl
  • Ivory
  • Peach

Short Strapless Lace Dress

$29.00 TR-D30160i
In Stock Buy Short Striped Spaghetti Strap Dress at PromGirl
  • Coral/Coral

Short Striped Spaghetti Strap Dress

$69.00 $29.00 BD-HX1914305
In Stock Buy Short Strapless Sweetheart Dress at PromGirl
  • Fuchsia

Short Strapless Sweetheart Dress

$59.00 $29.00 WC-K1842
In Stock Buy Short Strapless Sweetheart Dress at PromGirl
  • Royal/Black

Short Strapless Sweetheart Dress

$69.00 $34.00 MQ-700985
In Stock Buy Short Strapless Sweetheart Dress at PromGirl
  • Black
  • Ivory/Black

Short Strapless Sweetheart Dress

$69.00 $34.00 IM-5322-0161C
In Stock Buy Short Spaghetti Strap Dress by XOXO at PromGirl
  • Burgundy

Short Spaghetti Strap Dress by XOXO

$69.00 $34.00 XO-6457PDS5
In Stock Buy Short Strapless Print Dress at PromGirl
  • Brown
  • Royal

Short Strapless Print Dress

$69.00 $34.00 TW-7046PT
In Stock Buy High Low Strapless Dress at PromGirl
  • Purple
  • Hot Pink

High Low Strapless Dress

$79.00 $39.00 MY-6103XY1N
In Stock Buy Short Strapless Sweetheart Dress at PromGirl
  • Ivory

Short Strapless Dress

$39.00 MD-D10281XXV
In Stock Buy High Low Sparkling Strapless Dress at PromGirl
  • Navy

High Low Sparkling Strapless Dress

$99.00 $39.00 MY-6103gj1n
In Stock Buy High Low Strapless Dress at PromGirl
  • Jade

High Low Strapless Dress for Homecoming

$79.00 $39.00 MY-2099sj1s
In Stock Buy Short Strapless Dress at PromGirl
  • Royal
  • Black

Short Strapless Dress

$79.00 $39.00 MT-6972
In Stock Buy Short Strapless Sweetheart Dress at PromGirl
  • Black/Black/Nude

Short Strapless Sweetheart Dress

$39.00 EM-BFB-1027-028
In Stock Buy Short Strapless Dress at PromGirl
  • Black

Short Strapless Dress

$79.00 $39.00 MT-MD-3727b
In Stock Buy Short White Strapless Sweetheart at PromGirl
  • Black

Short White Strapless Dress

$79.00 $39.00 MT-MD-3727
In Stock Buy Short One Shoulder Dress at PromGirl
  • Magenta
  • Royal

Short One Shoulder Dress

$59.00 $39.00 KI-9257
In Stock Buy Sweetheart High Low Halter Dress at PromGirl
  • Royal

High Low Halter Dress for Prom

$99.00 $39.00 CT-9560Q02B
In Stock Buy Short Strapless Sweetheart Dress at PromGirl
  • Cream/Dust Slate/Cream

Short Strapless Sweetheart Dress

$89.00 $44.00 BD-7DFC263
In Stock Buy Short Sexy Ruched Dress at PromGirl
  • Black
  • Red

Sexy Homecoming Dress by Jasz

$198.00 $45.00 JZ-4475
In Stock Buy Short Strapless Sweetheart Dress at PromGirl
  • Gunmetal/Light Silver

Short Strapless Sweetheart Dress

$99.00 $49.00 MQ-3605261
In Stock Buy High Low Strapless Sweetheart Dress at PromGirl
  • Blush

High Low Strapless Sweetheart Dress

$99.00 $49.00 IM-5081-0157C
In Stock Buy Short Strapless Sweetheart Empire Waist Dress at PromGirl
  • Mint

Strapless Short Prom Dress

$129.00 $49.00 BD-I0791571
In Stock Buy High Low Strapless Sweetheart Dress at PromGirl
  • Coral
  • Black
  • White

High Low Strapless Party Dress

$99.00 $49.00 BD-0676361
In Stock Buy Short Strapless Sweetheart Ombre Dress at PromGirl
  • Purple/Raspberry

Short Strapless Sweetheart Ombre Dress

$99.00 $49.00 MY-6940OS1P
In Stock Buy Short Spaghetti Strap Black Dress at PromGirl
  • Black

Short Spaghetti Strap Black Dress

$49.00 EM-DLK-1027-001
In Stock Buy Short Strapless Dress at PromGirl
  • Purple
  • Black
  • Royal
  • White

Short Strapless Dress

$49.00 TW-3922
In Stock Buy Strapless High Low Dress at PromGirl
  • Coral
  • Black
  • White

High Low Strapless White Dress

$99.00 $49.00 BD-0676361w
In Stock Buy Short Black Dress by Tempation at PromGirl
  • Black

Short Black Dress by Temptation

$158.00 $49.00 TE-2013
In Stock Buy Short Strapless Dress at PromGirl
  • Ivory/Lipstick

Short Strapless Dress

$59.00 LA-23370
In Stock Buy Floor Length Strapless Ruched Gown at PromGirl
  • Black

Floor Length Strapless Ruched Gown

$119.00 $59.00 DQ-8117
In Stock Buy Long Strapless A-Line Prom Dress at PromGirl
  • Yellow/Seafoam

LA Glo Strapless Ball Gown

$119.00 $59.00 LA-23296
In Stock Buy Long One Shoulder Sweetheart Gown at PromGirl
  • Royal Blue

Long One Shoulder Sweetheart Gown

$129.00 $64.00 DQ-8143
In Stock Buy Ruched Floor Length Sleeveless Dress at PromGirl
  • Purple (Sparkle Purple)

Ruched Floor Length Sleeveless Dress

$129.00 $64.00 BN-54291
In Stock Buy High Low Strapless Sweetheart Dress at PromGirl
  • Seafoam/Yellow/Ab

Strapless High Low Dress for Prom

$199.00 $65.00 BD-DY586433
In Stock Buy Short Strapless Sweetheart Dress at PromGirl
  • White

Short Strapless Dress

$69.00 MT-MD-3727-3
In Stock Buy Short Strapless Ruffled Dress at PromGirl
  • Light Blue
  • White
  • Light Pink
  • Ocean

Short Strapless Prom Dress by Alyce

$138.00 $69.00 AL-3545
In Stock Buy Floor Length Strapless Sweetheart Print Dress at PromGirl
  • Purple
  • Fuchsia

Strapless Print Prom Dress

$219.00 $69.00 DQ-8088
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 Short Sparkling Spaghetti Strap Dress at PromGirl
  • White/Silver

Short Sparkling Spaghetti Strap Dress

$149.00 $69.00 HL-201C51330
In Stock Buy Short Strapless Sweetheart Dress at PromGirl
  • Black/Multi

Short Strapless Sweetheart Dress

$149.00 $74.00 BN-54287
In Stock Buy Short Strapless Sweetheart Dress at PromGirl
  • Royal

Short Strapless Sweetheart Dress

$149.00 $74.00 FB-GS1155
In Stock Buy Short Strapless Sweetheart Dress at PromGirl
  • Jade
  • White

Short Strapless Sweetheart Dress

$149.00 $74.00 JT-740
In Stock Buy Floor Length One Shoulder Navy Dress at PromGirl
  • Deep Navy

Floor Length One Shoulder Navy Dress

$149.00 $74.00 BN-54090
In Stock Buy Long Strapless Sweetheart Blue Ombre Dress at PromGirl
  • Royal/Turquoise

Long Strapless Sweetheart Blue Ombre Dress

$149.00 $74.00 JU-ON-643347i
In Stock Buy High Low Strapless Dress at PromGirl
  • Mint

High Low Party Dress by LA Glo 22289

$219.00 $74.00 LA-22289
In Stock Buy Floor Length Strapless Ruffled Prom Dress at PromGirl
  • Seafoam

Long Ruffled Prom Dress by LA Glo

$199.00 $75.00 LA-23302
In Stock Buy Strapless High Low Dress at PromGirl
  • Ivory

Strapless High Low Dress

$79.00 MY-6103XX1N
In Stock Buy Short Strapless Empire Waist Dress at PromGirl
  • Seafoam

Short Strapless Black Dress

$79.00 MT-MD-5707
In Stock Buy Short Strapless Sweetheart Dress at PromGirl
  • Nude

Short Strapless Sweetheart Dress

$159.00 $79.00 NA-6002
In Stock Buy Short Strapless Sweetheart Dress at PromGirl
  • Sapphire

Short Strapless Sweetheart Dress

$158.00 $79.00 AL-4385
In Stock Buy Floor Length Strapless Sweetheart Ruched Dress at PromGirl
  • Peacock

Strapless Gown by Mori Lee 20416

$162.00 $81.00 ML-20416
In Stock Buy Short Strapless Sweetheart White Dress at PromGirl
  • White
  • Pink
  • Black

Short Strapless White Dress

$90.00 MT-MD-5533
In Stock Buy Floor Length Strapless Sweetheart at PromGirl
  • Purple

Lace Up Strapless Prom Gown

$189.00 $94.00 DQ-8532
In Stock Buy Elegant Short Turquoise Dress at PromGirl
  • Nude
  • Turquoise
  • Pink
  • Black
  • Fuchsia
  • Purple

Elegant Short Turquoise Dress

$190.00 $95.00 DJ-7521t
In Stock Buy One Shoulder Sexy Atria Dress at PromGirl
  • Turquoise

Atria One Shoulder Homecoming Dress

$194.00 $97.00 AT-7008
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 Short Strapless Two Piece Dress at PromGirl
  • Black/Silver

Short Strapless Two Piece Dress

$198.00 $99.00 AL-4412
In Stock Buy Short Sequin Strapless Sweetheart Dress by Alyce at PromGirl
  • Black

Short Sequin Dress by Alyce 4393

$198.00 $99.00 AL-4393
In Stock Buy Short One Shoulder Sparkling Dress at PromGirl
  • Blue

Short One Shoulder Sparkling Dress

$198.00 $99.00 MF-E1687
In Stock Buy Short Strapless Sweetheat Scala Dress at PromGirl
  • Olive

Short Strapless Sweetheat Scala Dress

$199.00 $99.00 Scala-48323
In Stock Buy Faviana Short Strapless Dress at PromGirl
  • Black/Ivory

Faviana Short Strapless Dress

$198.00 $99.00 FA-7427
In Stock Buy Short Strapless Babydoll Dress at PromGirl
  • Mint
  • Hot Coral

Short Strapless Babydoll Dress

$208.00 $99.00 HS-27846
In Stock Buy Short Spaghetti Strap Dress at PromGirl
  • Red

Short Spaghetti Strap Dress

$198.00 $99.00 DJ-9453
In Stock Buy Short Strapless Sweetheart Dress at PromGirl
  • Black/Nude

Short Strapless Sweetheart Dress

$198.00 $99.00 SK-3407
In Stock Buy Full Length Strapless Evening Gown at PromGirl
  • Turquoise Stone

Full Length Strapless Evening Gown

$358.00 $99.00 FA-7344
In Stock Buy One Shoulder Floor Length Dress at PromGirl
  • Fuchsia
  • Aqua

One Shoulder Floor Length Dress

$278.00 $99.00 KC-3716
In Stock Buy Floor Length Lace Dress at PromGirl
  • Pink

Floor Length Lace Dress

$242.00 $99.00 DJ-10174
In Stock Buy Full Length Strapless Formal Gown at PromGirl
  • Wild Orchid

Faviana Strapless Evening Gown 7339

$278.00 $99.00 FA-7339
In Stock Buy Floor Length Bead Embellished Dress at PromGirl
  • Teal

Floor Length Bead Embellished Dress

$279.00 $99.00 DJ-10445
In Stock Buy Full Length Strapless Chiffon Dress at PromGirl
  • Orchid

Full Length Strapless Chiffon Dress

$278.00 $99.00 FA-7364
In Stock Buy Shimmer Strapless Sweetheart Prom Dress at PromGirl
  • Cobalt/Turquoise

Shimmer Sexy Corset Evening Gown

$260.00 $99.00 BJ-59403-BJV
In Stock Buy Hannah S Dress 27629 at PromGirl
  • Magenta/Gold

Hannah S Short Sequin Party Dress

$208.00 $99.00 HS-27629
In Stock Buy Long Strapless Sweetheart Dress at PromGirl
  • Midnight Blue

Long Strapless Sweetheart Dress

$278.00 $99.00 LF-18216
In Stock Buy Strapless High Low Prom Dress at PromGirl
  • Lilac

Strapless High Low Prom Dress

$268.00 $99.00 BJ-A59841
In Stock Buy Strapless Sweetheart Floor Length Dress at PromGirl
  • Lilac

Strapless Beaded Prom Dress

$199.00 $99.00 NA-2903
In Stock Buy Strapless Sweetheart Floor Length Red Dress at PromGirl
  • Red
  • Teal

Corset Style Strapless Prom Gown

$199.00 $99.00 DQ-8642
In Stock Buy Long Strapless Sweetheart Evening Gown at PromGirl
  • Hot Violet
  • Electric Pink

Strapless Beaded Gown by Flirt

$278.00 $99.00 FL-P5830
In Stock Buy Long Strapless Sweetheart Formal Gown at PromGirl
  • Morganite
  • White
  • Water
  • Red

Strapless Long Prom Dress by Alyce

$198.00 $99.00 AL-35595
In Stock Buy Floor Length Strapless Chiffon Gown at PromGirl
  • Wow Pink
  • Kelly Green

Strapless Formal Gown by Alyce 35442

$230.00 $99.00 AL-35442
In Stock Buy Strapless Chiffon Prom Dress at PromGirl
  • White/Gold

Strapless Chiffon Prom Dress

$320.00 $99.00 BJ-A59817
In Stock Buy Long Strapless Chiffon Formal Gown at PromGirl
  • Ice Blue

Long Strapless Chiffon Formal Gown

$278.00 $99.00 FA-7306
In Stock Buy Long Strapless Open Back Gown at PromGirl
  • Sky Blue
  • Tangerine

Long Strapless Open Back Gown

$230.00 $99.00 AL-35590
In Stock Buy Full Length Strapless Chiffon Gown at PromGirl
  • Hush
  • White
  • Capri Breeze

Strapless Gown in Chiffon by Alyce

$250.00 $99.00 AL-35597
In Stock Buy Full Length Strapless Evening Gown at PromGirl
  • Soft Mango
  • Pink Royale

Full Length Strapless Evening Gown

$378.00 $99.00 FL-P4887
In Stock Buy Short Strapless A-Line Prom Dress at PromGirl
  • Cobalt
  • Cherry

Short Strapless A-Line Prom Dress

$199.00 $100.00 BL-9861
In Stock Buy Short Strapless Sweetheart Dress at PromGirl
  • Red
  • Dusty Rose

Short Strapless Sweetheart Dress

$214.00 $107.00 AT-AC8974
* 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.