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 Fitted Strapless Dress at PromGirl
  • Black/Gold

Short Fitted Strapless Dress

$59.00 $29.00 WC-K1744
In Stock Buy Short Lace Spaghetti Strap Dress at PromGirl
  • Black/Nude

Short Lace Spaghetti Strap Dress

$78.00 $29.00 MT-7109
In Stock Buy Short Sleeveless Sweetheart Dress at PromGirl
  • Royal
  • Neon Coral

Short Sleeveless Sweetheart Dress

$49.00 $29.00 EM-DUB-1061-v
In Stock Buy Strapless Ruched Pink Party Dress at PromGirl
  • Pink
  • Light Teal
  • Red

Strapless Ruched Party Dress

$69.00 $34.00 DI-JM1363
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
  • Cream

Short Strapless Sweetheart Dress

$69.00 $34.00 MT-MD-5661
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 High Low Strapless Sweetheart Dress at PromGirl
  • Navy/Silver

High Low Strapless Sweetheart Dress

$79.00 $39.00 RR-GPJ12458I
In Stock Buy Short Strapless Sweetheart Dress at PromGirl
  • Mint
  • New Red
  • Peach
  • New Teal

Beaded Strapless Short Dress

$99.00 $39.00 DI-JM2597
Buy Short Lace Strapless Sweetheart Lace Dress at PromGirl

Short Lace Strapless Dress

$119.00 $39.00 DI-JM1968-v
In Stock Buy Short Strapless Sweetheart Dress at PromGirl
  • Black/Fuchsia

Short Strapless Sweetheart Dress

$69.00 $39.00 WC-K1751
In Stock Buy High Low Strapless Sweetheart Dress at PromGirl
  • Aqua
  • Baby Pink

High Low Strapless Sweetheart Dress

$90.00 $45.00 NA-2699n
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 Short Sleeveless Party Dress at PromGirl
  • White/Navy

Short Sleeveless Party Dress

$49.00 MD-D20155AHA
In Stock Buy Floor Length Open Back Lace Gown at PromGirl
  • Coral

Floor Length Open Back Lace Gown

$149.00 $49.00 JU-47705
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 Zebra Print Dress at PromGirl
  • Zebra/Purple

Short Zebra Print Party Dress

$99.00 $49.00 DQ-8103
In Stock Buy Short Strapless Sweetheart Babydoll Dress at PromGirl
  • Fuchsia/Pink
  • Turquoise/Olive
  • Olive/Pink

Strapless Baby Doll Party Dress

$99.00 $49.00 DQ-8000-v
In Stock Buy Short Strapless Sweetheart Pink Dress at PromGirl
  • Pink

Short Strapless White Dress

$90.00 $49.00 MT-MD-5533-vp
In Stock Buy Strapless Lace Mermaid Dress at PromGirl
  • Black
  • Fuchsia
  • Champagne
  • Royal
  • New Red

Strapless Lace Mermaid Dress

$99.00 $49.00 DI-13524L
In Stock Buy Classic Long Strapless Sweetheart Gown at PromGirl
  • Plum

Classic Long Strapless Gown

$99.00 $50.00 PO-5986
In Stock Buy Short Sleeveless Little Black Dress at PromGirl
  • Black

Short Sleeveless Little Black Dress

$109.00 $54.00 WC-K2887
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 Short Cap Sleeve Lace Dress at PromGirl
  • Royal

Short Cap Sleeve Lace Dress

$59.00 AS-i252956B2
In Stock Buy Strapless Sweetheart Floor Length Dress at PromGirl
  • Lilac

Strapless Sweetheart Floor Length Dress

$99.00 $59.00 MY-8341GG1S
In Stock Buy Long One Shoulder Ruched Dress at PromGirl
  • Royal
  • Eggplant
  • Red
  • Light Teal
  • Pink
  • Black
  • Green

Elegant One Shoulder Gown for Prom

$99.00 $59.00 DI-15218
In Stock Buy Floor Length Strapless Sweetheart Dress at PromGirl
  • Coral

Floor Length Strapless Sweetheart Dress

$99.00 $59.00 MY-2304SJ1S
In Stock Buy Lace Floor Length Strapless Sweetheart Dress at PromGirl
  • Eggplant
  • Champagne
  • Fuchsia
  • Royal

Long Strapless Lace Dress

$129.00 $64.00 DI-K0347B
In Stock Buy Short Strapless Sweetheart Dress at PromGirl
  • White
  • Peach
  • Mint

Short Strapless Dress

$69.00 MT-MD-3727-3
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 Sexy Red One Shoulder Dress at PromGirl
  • Red

Short Red Prom Dress by Jasz 4216

$199.00 $69.00 JZ-4216
In Stock Buy Short Strapless Sweetheart Dress at PromGirl
  • Aqua
  • Electric Blue
  • Lime
  • Yellow

Strapless Party Dress by Alyce 4311

$250.00 $69.00 AL-4311-v
In Stock Buy Short One Shoulder Dress at PromGirl
  • Lilac
  • Purple
  • Silver

One Shoulder Party Dress

$129.00 $69.00 DQ-8426-v
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 Long Strapless Sweetheart Prom Dress at PromGirl
  • Ivory
  • Neon Hot Coral

Strapless Orange Gown by City Triangles

$149.00 $74.00 CT-8420DW3Bnc
In Stock Buy Short Strapless Sweetheart Dress at PromGirl
  • Grape
  • Red

Short Strapless Dress by Mori Lee

$148.00 $74.00 ML-31032
In Stock Buy Floor Length Sleeveless Dress at PromGirl
  • Neon Hot Coral

Floor Length Sleeveless Dress

$149.00 $74.00 CT-8415QV1B
In Stock Buy Short Strapless Sweetheart Prom Dress at PromGirl
  • White/Gold
  • Purple
  • Turquoise

Short Strapless Prom Dress

$150.00 $75.00 DQ-8416
In Stock Buy Long Strapless Chiffon Evening Dress at PromGirl
  • Electric Purple
  • Peacock
  • Sky Blue

Long Strapless Chiffon Evening Dress

$498.00 $75.00 LF-17118
In Stock Buy Floor Length Sleeveless Sweetheart Dress at PromGirl
  • Purple
  • Teal

Floor Length Sleeveless Sweetheart Dress

$168.00 $79.00 HOW-PM-22453
In Stock Buy Classic Strapless Sweetheart Evening Gown at PromGirl
  • Watermelon
  • Turquoise
  • Black

Strapless Beaded Evening Gown

$158.00 $79.00 NA-2807
In Stock Buy Flowing Floor Length Prom Dress at PromGirl
  • Black
  • Turquoise
  • Fuchsia
  • Royal Blue
  • Silver
  • Teal

Long Formal Dress for Prom

$149.00 $79.00 DQ-8115-v
In Stock Buy Short Strapless Ruffled Dress at PromGirl
  • Light Blue
  • Light Pink

Short Strapless Prom Dress by Alyce

$138.00 $89.00 AL-3545
In Stock Buy Scala Short Strapless Sequin Prom Dress at PromGirl
  • Fuchsia

Scala Short Strapless Sequin Prom Dress

$178.00 $89.00 Scala-48404
In Stock Buy Short Strapless Sweetheart White Dress at PromGirl
  • White

Short Strapless White Dress

$90.00 MT-MD-5533
In Stock Buy Full Length Strapless Formal Gown at PromGirl
  • Gold
  • Purple
  • Fuchsia
  • Turquoise
  • Lime

Full Length Strapless Formal Gown

$189.00 $94.00 DQ-8116
* 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.