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 Strapless Sweetheart Floor Length Dress at PromGirl
  • White
  • Royal
  • Mist Green

Beaded Strapless Prom Dress

$149.00 BD-067A104
In Stock Buy Floor Length Strapless Sweetheart JVN by Jovani Dress at PromGirl
  • Royal
  • Red
  • Orange
  • Black

Strapless Evening Gown JVN by Jovani

$278.00 JO-JVN-JVN90365
In Stock Buy Short Strapless Sweetheart Dress at PromGirl
  • Black/Fuchsia
  • Coral/White
  • Black/Purple
  • Black/Teal

Strapless Short Party Dress

$149.00 FB-GS1055
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 Short Strapless Sweetheart Dress at PromGirl
  • White

Short Strapless Dress

$69.00 MT-MD-3727-3
In Stock Buy Long Strapless Sweetheart Empire Waist Dress at PromGirl
  • White
  • Bright Purple

La Femme Designer Prom Gown

$278.00 $139.00 LF-18313
In Stock Buy Short Strapless Beaded and Sequined Dress at PromGirl
  • Champagne

Short Strapless Dress by Blush 9665

$299.00 $150.00 BL-9665
In Stock Buy Short Strapless Party Dress at PromGirl
  • Blush

Short Strapless Party Dress

$120.00 BD-797442
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 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 White Dress at PromGirl
  • White
  • Pink
  • Black

Short Strapless White Dress

$90.00 MT-MD-5533
In Stock Buy JVN by Jovani One Shoulder Rhinestone Embellished Floor Length Dress at PromGirl
  • Black
  • White
  • Coral

One Shoulder Gown JVN by Jovani

$358.00 JO-JVN-JVN91220
In Stock Buy Strapless Silver Dress at PromGirl
  • Silver (Silver/Black)
  • Plum (Plum/Black)
  • Cinnamon
  • Fuchsia/Black

Strapless Prom Gown

$169.00 NA-2554
In Stock Buy JVN by Jovani Floor Length Strapless Sweetheart Sequin Dress at PromGirl
  • White/Nude
  • Black/Nude

Strapless Sequin Gown JVN by Jovani

$398.00 $299.00 JO-JVN-JVN88738
In Stock Buy Strapless High Low Dress at PromGirl
  • Ivory

Strapless High Low Dress

$79.00 MY-6103XX1N
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 Floor Length Strapless Sweetheart JVN by Jovani Dress at PromGirl
  • Light Yellow

JVN by Jovani Strapless Prom Gown

$318.00 $199.00 JO-JVN-JVN92870
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 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 Sweetheart Dress at PromGirl
  • Ivory

Short Strapless Dress

$39.00 MD-D10281XXV
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 Floor Length Strapless Sweetheart Print Dress at PromGirl
  • Purple
  • Fuchsia

Strapless Print Prom Dress

$219.00 $69.00 DQ-8088
In Stock Buy Short Lace Strapless Sweetheart Lace Dress at PromGirl
  • Light Teal
  • Royal
  • Black
  • New Red
  • Coral
  • Dark Red
  • Navy

Short Lace Strapless Dress

$119.00 DI-JM1968
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 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 Strapless Lace Summer Dress at PromGirl
  • Ivory
  • Peach

Short Strapless Lace Dress

$29.00 TR-D30160
In Stock Buy Short Strapless Dress at PromGirl
  • Ivory/Lipstick

Short Strapless Dress

$59.00 LA-23370
In Stock Buy Short Sleeveless Dress at PromGirl
  • Black
  • Royal Blue
  • Coral

Short Sleeveless Dress

$29.00 CCC-6C9295
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 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 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 Ombre Dress at PromGirl
  • Purple/Raspberry

Short Strapless Sweetheart Ombre Dress

$99.00 $49.00 MY-6940OS1P
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 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
  • Mint
  • Coral
  • Silver
  • Tiffany
  • Pink

Short Strapless Prom Dress

$139.00 FB-GS1139
In Stock Buy Short Strapless Empire Waist Dress at PromGirl
  • Seafoam

Short Strapless Black Dress

$79.00 MT-MD-5707
In Stock Buy Strapless Semi Formal Dress at PromGirl
  • Taupe

Strapless Semi Formal Dress

$29.00 MD-D11005GGP
In Stock Buy Short Beaded Tulle Babydoll Dress at PromGirl
  • Gold

Babydoll Prom Dress by Mori Lee

$248.00 $124.00 ML-9214
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 Short Strapless Sweetheart Dress at PromGirl
  • Red
  • Dusty Rose

Short Strapless Sweetheart Dress

$214.00 $107.00 AT-AC8974
In Stock Buy Short A-Line Sweetheart Dress at PromGirl
  • Watermelon
  • Magenta
  • Ultra Green

Short Party Dress

$138.00 NA-2824
In Stock Buy Short Silver Sequin Dress at PromGirl
  • New Silver

Short Silver Sequin Dress

$220.00 $110.00 SK-3454
In Stock Buy Floor Length Tony Bowls Prom Dress at PromGirl
  • Coral
  • Aqua

Floor Length Tony Bowls Prom Dress

$458.00 $229.00 TB-PA114743
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 Strapless Short Dress by Landa Splash at PromGirl
  • Lime

Strapless Short Dress by Landa Splash

$378.00 $189.00 LN-SP-E456
In Stock Buy A-Line Short Strapless Dress at PromGirl
  • Gold

A-Line Short Strapless Dress

$258.00 $129.00 LN-SP-E461
In Stock Buy Strapless Sweetheart Neon Dress at PromGirl
  • Neon Pink
  • Neon Lime

Strapless Sweetheart Neon Dress

$238.00 $119.00 ML-9281
* 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.