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 Knee Length Strapless Sweetheart Dress at PromGirl
  • Navy

Knee Length Strapless Sweetheart Dress

$49.00 $24.00 MY-6904gu1s
In Stock Buy High Low Sparkling Strapless Dress at PromGirl
  • Navy

High Low Sparkling Strapless Dress

$99.00 $49.00 MY-6103gj1n
In Stock Buy Floor Length Strapless Dress with Embellished Waist at PromGirl
  • Ivory
  • Neon Hot Coral

Strapless Prom Gown by City Triangles

$149.00 $74.00 CT-8420DW3B
In Stock Buy Strapless Silver Dress at PromGirl
  • Silver (Silver/Black)
  • Cinnamon

Strapless Prom Gown

$169.00 NA-2554
In Stock Buy Full Length Strapless Formal Gown at PromGirl
  • Gold
  • Black
  • Purple
  • Fuchsia
  • Turquoise
  • Lime

Full Length Strapless Formal Gown

$189.00 $94.00 DQ-8116
In Stock Buy Floor Length Strapless Sweetheart Dress at PromGirl
  • Red
  • Pink
  • Coral
  • Mint
  • Royal Blue
  • Black
  • Hunter Green

Long Strapless Prom Gown

$179.00 DQ-8693
In Stock Buy Floor Length Strapless Sweetheart Dress at PromGirl
  • Mint Green
  • Nude
  • Blush
  • Bashful Pink

Strapless Lace Up Gown

$199.00 NA-8121
In Stock Buy Short Strapless Party Dress at PromGirl
  • Blush

Short Strapless Party Dress

$129.00 BD-797442
In Stock Buy Elegant Strapless Formal Gown at PromGirl
  • Gold
  • Purple
  • Brown(Chocolate)
  • Black

Strapless Formal Gown for Prom

$199.00 $99.00 DQ-8072
In Stock Buy Strapless Sweetheart Floor Length Dress at PromGirl
  • Cream/Blush/Silver

Strapless Sweetheart Floor Length Dress

$199.00 $99.00 CT-8012RW5B
In Stock Buy Short One Shoulder Tulle Dress at PromGirl
  • Turquoise
  • Fuchsia

One Shoulder Party Dress

$149.00 $59.00 DQ-8030
In Stock Buy Strapless Ruched Pink Party Dress at PromGirl
  • Lavender
  • Pink
  • Light Teal
  • Black
  • Champagne
  • Red

Strapless Ruched Party Dress

$69.00 $34.00 DI-JM1363
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 Spaghetti Strap Floor Length Dress at PromGirl
  • Black/Nude/Silver

Spaghetti Strap Floor Length Dress

$199.00 $99.00 BN-55008
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 Lace Floor Length Strapless Sweetheart Dress at PromGirl
  • Eggplant
  • Navy
  • Champagne
  • Fuchsia
  • Royal

Long Strapless Lace Dress

$129.00 $64.00 DI-K0347B
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 Floor Length Strapless Sweetheart JVN by Jovani Dress at PromGirl
  • Royal
  • Red
  • Orange
  • Black
  • Blush

Strapless Evening Gown JVN by Jovani

$278.00 JO-JVN-JVN90365
In Stock Buy JVN by Jovani Long Strapless Sweetheart Lace Embellished Dress at PromGirl
  • Nude/White
  • Black/White

Strapless Long Prom Dress JVN by Jovani

$378.00 $249.00 JO-JVN-JVN91085
In Stock Buy Strapless Sweetheart Ombre Formal Gown at PromGirl
  • Jade

Open Back Prom Dress by La Femme

$398.00 $299.00 LF-18525
In Stock Buy Short Strapless Sweetheart Dress at PromGirl
  • White
  • Mint

Short Strapless Dress

$69.00 MT-MD-3727-3
In Stock Buy Floor Length Strapless Sweetheart Atria Dress at PromGirl
  • Royal Blue

Long Strapless Atria Prom Dress 2311

$230.00 $115.00 AT-2311
In Stock Buy Short Strapless Sweetheart Homecoming Dress at PromGirl
  • Navy

Strapless Blue Cocktail Dress by Sean

$250.00 $125.00 SN-50539
In Stock Buy Short Strapless Sweetheart Dress at PromGirl
  • Gold
  • Ivory
  • Navy
  • Turquoise

Short Strapless Sweetheart Dress

$69.00 $34.00 NA-2820
In Stock Buy Floor Length Strapless Sweetheart Dress at PromGirl
  • Deep Blue Ocean

Long Strapless Blue Dress for Prom

$99.00 $49.00 CT-8420NN3E
In Stock Buy Short Strapless Sweetheart White Dress at PromGirl
  • White
  • Pink

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 Sweetheart Floor Length Dress at PromGirl
  • Mint

Long Mint Strapless Prom Dress

$199.00 $99.00 DQ-8633
In Stock Buy Short Strapless Sweetheart Dress at PromGirl
  • Cream
  • Coral

Short Strapless Sweetheart Dress

$69.00 $34.00 MT-MD-5661
In Stock Buy La Femme 17521 Prom Dress at PromGirl
  • Navy
  • Peacock
  • Watermelon

La Femme Prom Dress 17521

$338.00 LF-17521
Buy Full Length Strapless Dress at PromGirl
  • Lavender
  • Aquamarine

Full Length Strapless Dress

$450.00 $148.00 LF-18544
In Stock Buy Long Strapless Sequin Dress at PromGirl
  • Green
  • Pearl

Long Strapless Sequin Dress

$498.00 $138.00 LF-17369
In Stock Buy Strapless Sweetheart Floor Length Dress at PromGirl
  • Bright Cherry

Strapless Sweetheart Floor Length Dress

$149.00 $69.00 CT-9560QX8A
In Stock Buy Floor Length Sleeveless Sequin Dress at PromGirl
  • Red
  • Royal
  • Silver
  • Turquoise
  • Coral
  • Emerald
  • Pink

Long Sequin Prom Dress

$229.00 DQ-8468
In Stock Buy Short A-Line Sweetheart Dress at PromGirl
  • Magenta
  • Watermelon
  • Ultra Green

Short Party Dress

$138.00 NA-2824
In Stock Buy Floor Length Sleeveless Lace Dress at PromGirl
  • Black

Floor Length Sleeveless Lace Dress

$79.00 $39.00 LP-22890
In Stock Buy Short Strapless Sweetheart Sequin Dress at PromGirl
  • Navy/Silver

Short Strapless Sweetheart Sequin Dress

$79.00 $39.00 RR-GNN12458I
In Stock Buy Floor Length Open Back Lace Gown at PromGirl
  • Coral

Floor Length Open Back Lace Gown

$149.00 $49.00 JU-47705
* 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.