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 Dress at PromGirl
  • Ivory

Short Strapless Dress

$69.00 $19.00 MD-D10281XXV
In Stock Buy Short Strapless Lace Summer Dress at PromGirl
  • Peach

Short Strapless Lace Dress

$29.00 $19.00 TR-D30160
In Stock Buy Short Strapless Sweetheart Lace Dress at PromGirl
  • Mint

Short Strapless Sweetheart Lace Dress

$49.00 $19.00 CT-3007Z53K
In Stock Buy Short Strapless Sweetheart Dress at PromGirl
  • Gunmetal

Short Strapless Sweetheart Dress

$59.00 $19.00 WC-K2552
In Stock Buy Strapless High Low Dress at PromGirl
  • Ivory

Strapless High Low Dress

$79.00 $19.00 MY-6103XX1N
In Stock Buy Short Strapless Empire Waist Dress at PromGirl
  • Seafoam

Short Strapless Black Dress

$79.00 $19.00 MT-MD-5707
In Stock Buy Strapless Sweetheart High Low Dress at PromGirl
  • Magenta
  • Coral

Strapless Sweetheart High Low Dress

$69.00 $19.00 MD-D11711GGP
In Stock Buy Strapless Semi Formal Dress at PromGirl
  • Taupe

Strapless Semi Formal Dress

$59.00 $19.00 MD-D11005GGP
In Stock Buy Short Striped Spaghetti Strap Dress at PromGirl
  • Coral/Coral

Short Striped Spaghetti Strap Dress

$69.00 $19.00 BD-HX1914305
In Stock Buy Short One Shoulder Dress at PromGirl
  • Magenta
  • Royal

Short One Shoulder Dress

$59.00 $19.00 KI-9257
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 Dress at PromGirl
  • Green/Red

Short Strapless Sweetheart Dress

$49.00 $19.00 CT-2794BG2F
In Stock Buy Short Strapless Sweetheart Dress at PromGirl
  • Fuchsia

Short Strapless Sweetheart Dress

$59.00 $19.00 WC-K1842
In Stock Buy Strapless Sweetheart Short Dress by XOXO at PromGirl
  • Cobalt

Strapless Blue Cocktail Dress

$79.00 $19.00 XO-2523ST11
In Stock Buy High Low Strapless Dress at PromGirl
  • Purple
  • Hot Pink

High Low Strapless Dress

$79.00 $19.00 MY-6103XY1N
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 $19.00 CT-4326DT2A
In Stock Buy Short Strapless Sweetheart Print Dress at PromGirl
  • Black/White

Short Strapless Sweetheart Print Dress

$49.00 $19.00 AS-i796661z8
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 Short Sleeveless Dress at PromGirl
  • Black
  • Royal Blue
  • Coral

Short Sleeveless Dress

$29.00 CCC-6C9295
In Stock Buy Short Black Dress by Tempation at PromGirl
  • Black

Short Black Dress by Temptation

$158.00 $29.00 TE-2013
In Stock Buy Short White Strapless Sweetheart at PromGirl
  • Black

Short White Strapless Dress

$79.00 $29.00 MT-MD-3727
In Stock Buy Short Strapless Sweetheart Dress at PromGirl
  • Gunmetal/Light Silver

Short Strapless Sweetheart Dress

$99.00 $29.00 MQ-3605261
In Stock Buy High Low Strapless Sweetheart Dress at PromGirl
  • Blush

High Low Strapless Sweetheart Dress

$99.00 $29.00 IM-5081-0157C
In Stock Buy Short Strapless Sweetheart Empire Waist Dress at PromGirl
  • Mint

Strapless Short Prom Dress

$129.00 $29.00 BD-I0791571
In Stock Buy High Low Strapless Dress at PromGirl
  • Jade

High Low Strapless Dress for Homecoming

$79.00 $29.00 MY-2099sj1s
In Stock Buy Short Spaghetti Strap Dress at PromGirl
  • Purple

Short Spaghetti Strap Dress

$230.00 $29.00 DJ-9577
In Stock Buy Short Strapless Sweetheart Dress at PromGirl
  • Cream/Dust Slate/Cream

Short Strapless Sweetheart Dress

$89.00 $29.00 BD-7DFC263
In Stock Buy Short Strapless Sweetheart Dress at PromGirl
  • Ivory/Black

Short Strapless Sweetheart Dress

$69.00 $29.00 IM-5322-0161C
In Stock Buy Short Strapless Dress at PromGirl
  • Ivory/Lipstick

Short Strapless Dress

$69.00 $34.00 LA-23370
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/Black/Nude

Short Strapless Sweetheart Dress

$39.00 EM-BFB-1027-028
In Stock Buy Floor Length Strapless Sweetheart Ruched Dress at PromGirl
  • Peacock

Strapless Gown by Mori Lee 20416

$162.00 $39.00 ML-20416
In Stock Buy Short Sparkling Spaghetti Strap Dress at PromGirl
  • White/Silver

Short Sparkling Spaghetti Strap Dress

$149.00 $39.00 HL-201C51330
In Stock Buy Long Strapless Sweetheart Blue Ombre Dress at PromGirl
  • Royal/Turquoise

Long Strapless Sweetheart Blue Ombre Dress

$149.00 $39.00 JU-ON-643347i
In Stock Buy Floor Length Strapless Ruffled Prom Dress at PromGirl
  • Seafoam

Long Ruffled Prom Dress by LA Glo

$199.00 $39.00 LA-23302
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 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 $49.00 DQ-8088
In Stock Buy High Low Strapless Sweetheart Dress at PromGirl
  • Seafoam/Yellow/Ab

Strapless High Low Dress for Prom

$199.00 $49.00 BD-DY586433
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

Short Strapless Dress

$49.00 TW-3922
In Stock Buy Floor Length Lace Dress at PromGirl
  • Pink

Floor Length Lace Dress

$242.00 $49.00 DJ-10174
In Stock Buy Strapless Sweetheart Floor Length Dress at PromGirl
  • Lilac

Strapless Beaded Prom Dress

$199.00 $49.00 NA-2903
In Stock Buy Strapless Chiffon Prom Dress at PromGirl
  • White/Gold

Strapless Chiffon Prom Dress

$320.00 $49.00 BJ-A59817
In Stock Buy Long Strapless Chiffon Formal Gown at PromGirl
  • Ice Blue

Long Strapless Chiffon Formal Gown

$278.00 $49.00 FA-7306
In Stock Buy Strapless Sweetheart High Low Dress at PromGirl
  • Peach

Strapless Sweetheart High Low Dress

$318.00 $49.00 NM-7091
In Stock Buy One Shoulder Sexy Atria Dress at PromGirl
  • Turquoise

Atria One Shoulder Homecoming Dress

$194.00 $49.00 AT-7008
In Stock Buy Strapless Short Dress by Landa Splash at PromGirl
  • Lime

Strapless Short Dress by Landa Splash

$378.00 $49.00 LN-SP-E456
In Stock Buy Short Sequin Strapless Sweetheart Dress by Alyce at PromGirl
  • Black

Short Sequin Dress by Alyce 4393

$198.00 $49.00 AL-4393
In Stock Buy Faviana Short Strapless Dress at PromGirl
  • Black/Ivory

Faviana Short Strapless Dress

$198.00 $49.00 FA-7427
In Stock Buy Short Strapless Sweetheart Dress at PromGirl
  • Coral
  • Black
  • Lilac
  • Red
  • Silver

Short Strapless Party Dress

$119.00 $59.00 DQ-8336
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
  • Light Pink

Short Strapless Prom Dress by Alyce

$138.00 $69.00 AL-3545
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 Long Strapless Sweetheart Alyce Dress at PromGirl
  • Aqua

Strapless Pageant Gown by Alyce

$270.00 $69.00 AL-35579
In Stock Buy Floor Length Strapless A-line Dress at PromGirl
  • Peach

Floor Length Strapless A-line Dress

$270.00 $69.00 BJ-A59801
In Stock Buy A-Line Short Strapless Dress at PromGirl
  • Gold

A-Line Short Strapless Dress

$258.00 $69.00 LN-SP-E461
In Stock Buy Faviana 7434 Short Strapless Dress at PromGirl
  • Red/Nude

Faviana 7434 Short Strapless Dress

$258.00 $69.00 FA-7434
In Stock Buy Short Strapless Sweetheart Dress at PromGirl
  • Royal
  • Red

Short Strapless Sweetheart Dress

$258.00 $69.00 PT-2813
In Stock Buy Strapless Homecoming Dress by Alyce at PromGirl
  • Royal

Strapless Homecoming Dress by Alyce

$258.00 $69.00 AL-3611
In Stock Buy Long Sweetheart Halter Formal Gown at PromGirl
  • Aqua

Long Sweetheart Halter Formal Gown

$398.00 $79.00 NM-7066
In Stock Buy Short Strapless Beaded and Sequined Dress at PromGirl
  • Champagne

Short Strapless Dress by Blush 9665

$299.00 $79.00 BL-9665
In Stock Buy Short Strapless Sweetheart Dress at PromGirl
  • Teal

Short Strapless Sweetheart Dress

$278.00 $79.00 AL-3626
In Stock Buy Long Strapless Open Back Formal Gown at PromGirl
  • Aqua
  • Party Pink

Long Strapless Open Back Formal Gown

$338.00 $89.00 ML-95047
In Stock Buy Strapless La Femme Homecoming Dress at PromGirl
  • Seamist
  • Wisteria

Strapless La Femme Homecoming Dress

$358.00 $89.00 LF-20574
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 Elegant Short Turquoise Dress at PromGirl
  • Nude
  • Turquoise
  • Pink

Elegant Short Turquoise Dress

$190.00 $95.00 DJ-7521t
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 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

Strapless Long Prom Dress by Alyce

$198.00 $99.00 AL-35595
In Stock Buy Strapless Sweetheart Floor Length JVN by Jovani Dress at PromGirl
  • Purple

Strapless Evening Gown JVN by Jovani

$398.00 $99.00 JO-JVN-JVN89651
In Stock Buy Strapless Sweetheart Floor Length JVN by Jovani Dress at PromGirl
  • Mint
  • White

JVN by Jovani Long Prom Dress

$350.00 $99.00 JO-JVN-JVN90270
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 Long Strapless Open Back Gown at PromGirl
  • Sky Blue
  • Tangerine

Long Strapless Open Back Gown

$230.00 $99.00 AL-35590
In Stock Buy Alyce Floor Length Strapless Dress at PromGirl
  • Blue Radiance
  • Lilac

Alyce Floor Length Strapless Dress

$330.00 $99.00 AL-6194
In Stock Buy Long Strapless Empire Waist Gown at PromGirl
  • Barbie Pink

Formal Strapless Gown by Blush 9717

$338.00 $99.00 BL-9717
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 Strapless A-Line Prom Dress at PromGirl
  • Cobalt
  • Cherry

Short Strapless A-Line Prom Dress

$199.00 $100.00 BL-9861
In Stock Buy Floor Length Strapless Sweetheart Dress at PromGirl
  • Peach

Elegant Strapless Evening Gown

$229.00 $114.00 DQ-8645
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 Short Strapless Party Dress at PromGirl
  • Blush

Short Strapless Party Dress

$120.00 BD-797442
In Stock Buy Long Strapless Sweetheart Dress at PromGirl
  • Peony
  • Kelly Green

Long Strapless Sweetheart Dress

$240.00 $120.00 BJ-866
In Stock Buy Sequin Embellished Short Scala Dress at PromGirl
  • Dark Lead
  • Teal
  • Black/Silver

Sequin Embellished Short Scala Dress 14260

$178.00 $124.00 Scala-14260
* 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.