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 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 Sweetheart Dress at PromGirl
  • White

Short Strapless Dress

$69.00 MT-MD-3727-3
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 Party Dress at PromGirl
  • Blush

Short Strapless Party Dress

$120.00 BD-797442
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
  • White
  • Black
  • 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
  • Lilac/Lilac

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 $199.00 JO-JVN-JVN88738
In Stock Buy Floor Length Strapless Sweetheart JVN by Jovani Dress at PromGirl
  • Light Yellow

JVN by Jovani Strapless Prom Gown

$318.00 $159.00 JO-JVN-JVN92870
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 MY-6103XY1N
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 Short Strapless A-Line Tulle Dress at PromGirl
  • Red/Black

Strapless Baby Doll Party Dress

$149.00 $49.00 DQ-8427
In Stock Buy Lace Floor Length Strapless Sweetheart Dress at PromGirl
  • Eggplant
  • Champagne
  • Navy
  • Fuchsia
  • Red
  • Royal

Long Strapless Lace Dress

$99.00 DI-K0347B
In Stock Buy Short Strapless Sweetheart Dress at PromGirl
  • Black
  • 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 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
  • Dark Red
  • Navy
  • New Red
  • Eggplant

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 Dress at PromGirl
  • Fuchsia

Short Strapless Sweetheart Dress

$59.00 $29.00 WC-K1842
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 Pink Dress at PromGirl
  • Pink
  • Black

Strapless Sweetheart Pink Dress

$49.00 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 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 Sleeveless Black Dress at PromGirl
  • Black

Short Sleeveless Black Dress

$29.00 RR-PQW9477i
In Stock Buy Short Strapless Sweetheart Dress at PromGirl
  • Light Blue
  • Baby Pink

Short Strapless Lace Up Party Dress

$149.00 $69.00 NA-2708
In Stock Buy Floor Length Strapless Sweetheart Dress at PromGirl
  • Black

Sequin Mermaid Gown

$149.00 $74.00 DQ-8417
In Stock Buy Short Spaghetti Strap Print Dress at PromGirl
  • Multi

Short Spaghetti Strap Print Dress

$29.00 $19.00 MD-D12694APE
In Stock Buy Short A-Line Sweetheart Dress at PromGirl
  • Watermelon
  • Magenta
  • Ultra Green

Short Party Dress

$138.00 NA-2824
In Stock Buy A-Line Short Strapless Dress at PromGirl
  • Gold

A-Line Short Strapless Dress

$258.00 LN-SP-E461
In Stock Buy Short Sequin Homecoming Dress at PromGirl
  • Port
  • Black
  • Gold
  • Navy
  • Teal

Short Sequin Homecoming Dress

$198.00 Scala-48336
* 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.