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
  • Black/Black/Nude

Short Strapless Sweetheart Dress

$39.00 $19.00 EM-BFB-1027-028
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 Lace Summer Dress at PromGirl
  • Peach

Short Strapless Lace Dress

$29.00 $19.00 TR-D30160
In Stock Buy Strapless Black Homecoming Dress at PromGirl
  • Black

Strapless Sequin Cocktail Dress

$49.00 $24.00 MP-D0759
In Stock Buy High Low Spaghetti Strap Dress at PromGirl
  • Teal/Blue

High Low Spaghetti Strap Dress

$49.00 $24.00 CT-2816DB2F
In Stock Buy Short Strapless Sweetheart Dress at PromGirl
  • Navy

Short Strapless Sweetheart Dress by Ruby Rox

$59.00 $29.00 RR-FPS12241i4-465
In Stock Buy Short Sleeveless Dress at PromGirl
  • Black
  • Royal Blue
  • Coral

Short Sleeveless Dress

$29.00 CCC-6C9295
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 Strapless Sweetheart Dress at PromGirl
  • Cream/Dust Slate/Cream

Short Strapless Sweetheart Dress

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

Short White Strapless Dress

$79.00 $29.00 MT-MD-3727
In Stock Buy Strapless Ruched Pink Party Dress at PromGirl
  • Lavender
  • Pink
  • Light Teal
  • Black
  • Champagne
  • Royal
  • Red

Strapless Ruched Party Dress

$69.00 $34.00 DI-JM1363
In Stock Buy Short Strapless Sweetheart Dress at PromGirl
  • Gold
  • Ivory
  • Turquoise

Short Strapless Sweetheart Dress

$69.00 $34.00 NA-2820
In Stock Buy Short Strapless Sweetheart Dress at PromGirl
  • Cream

Short Strapless Sweetheart Dress

$69.00 $34.00 MT-MD-5661
In Stock Buy Strapless Ruched Pink Party Dress at PromGirl
  • Lavender
  • Pink
  • Light Teal
  • Black
  • Champagne
  • Royal
  • Red

Strapless Ruched Pink Party Dress

$69.00 $34.00 DI-JM1363p
In Stock Buy Short Strapless Sweetheart Dress at PromGirl
  • Royal/Black

Short Strapless Sweetheart Dress

$69.00 $34.00 MQ-700985
In Stock Buy High Low Strapless Sweetheart Dress at PromGirl
  • Seafoam Mist

Strapless High Low Dress for Homecoming

$69.00 $34.00 CT-9351BV1B
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 Short Spaghetti Strap Black Dress at PromGirl
  • Black

Short Spaghetti Strap Black Dress

$79.00 $39.00 AC-DJ19379B
In Stock Buy Short Strapless Sweetheart Dress at PromGirl
  • Lavender
  • Mint
  • New Red
  • Peach
  • New Teal

Beaded Strapless Short Dress

$99.00 $39.00 DI-JM2597
In Stock Buy Short Sexy Ruched Dress at PromGirl
  • Red

Sexy Homecoming Dress by Jasz

$198.00 $45.00 JZ-4475
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 Sweetheart Dress at PromGirl
  • Deep Blue Ocean

Long Strapless Blue Dress for Prom

$99.00 $49.00 CT-8420NN3E
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 High Low Strapless Dress at PromGirl
  • Purple/Crystal

High Low Strapless Dress by Bee Darlin

$99.00 $49.00 BD-Q0154958
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 Floor Length Strapless Dress at PromGirl
  • Black

Strapless Lace Gown with Bow

$99.00 $49.00 DI-3586
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 Floor Length One Shoulder Prom Dress at PromGirl
  • Claret
  • Navy

Floor Length One Shoulder Prom Dress

$118.00 $59.00 MF-E1502
In Stock Buy Short One Shoulder Prom Drses at PromGirl
  • Turquoise
  • Fuchsia

One Shoulder Pink Party Dress

$149.00 $59.00 DQ-8030f
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

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 Short Strapless Sweetheart Dress at PromGirl
  • Turquoise

Short Strapless Sweetheart Dress

$139.00 $69.00 FB-GS1038
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 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 Dress at PromGirl
  • Lilac
  • Pink

Short Strapless Sweetheart Dress

$150.00 $75.00 FB-GS1106
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 Short Strapless Sweetheart Dress at PromGirl
  • Royal

Short Strapless Sweetheart Dress

$158.00 $79.00 MF-E1721
In Stock Buy Scala Short Strapless Sequin Prom Dress at PromGirl
  • Fuchsia
  • Ivory

Scala Short Strapless Sequin Prom Dress

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

Short Strapless White Dress

$90.00 MT-MD-5533
In Stock Buy Long Strapless Bridesmaid Gown at PromGirl
  • Pewter

Long Strapless Bridesmaid Gown

$180.00 $90.00 HOW-PM-22529
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
In Stock Buy Long Ombre One Shoulder Gown at PromGirl
  • Spicy Red

Long Ombre One Shoulder Gown

$398.00 $98.00 LF-18398
In Stock Buy Short Strapless La Femme Prom Dress at PromGirl
  • Watermelon

La Femme Short Strapless Prom Dress

$198.00 $98.00 LF-17649
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 Spaghetti Strap Floor Length Dress at PromGirl
  • Black/Nude/Silver

Spaghetti Strap Floor Length Dress

$199.00 $99.00 BN-55008
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 Long Ruched Open Back La Femme Dress at PromGirl
  • Aquamarine
  • Hot Fuchsia
  • Marine Blue

Long Ruched Open Back La Femme Dress

$398.00 $99.00 LF-19883
In Stock Buy Short Strapless Sweetheart Dress at PromGirl
  • Watermelon

Short Strapless Party Dress

$198.00 $99.00 CD-0504
In Stock Buy La Femme One Shoulder Sequin Dress at PromGirl
  • Charcoal
  • Navy

La Femme One Shoulder Sequin Dress

$199.00 $99.00 LF-17697
In Stock Buy Elegant Strapless Sweetheart Gown at PromGirl
  • Nude

Elegant Strapless Sweetheart Gown

$278.00 $99.00 LF-18842
In Stock Buy Sweetheart Sequin Dress by Scala at PromGirl
  • Ivory
  • Navy

Sweetheart Sequin Dress by Scala

$198.00 $99.00 Scala-48349
In Stock Buy Elegant Strapless Formal Gown at PromGirl
  • Gold
  • Purple
  • Brown(Chocolate)
  • Black

Strapless Brown Formal Gown

$199.00 $99.00 DQ-8072br
In Stock Buy Long Strapless Sweetheart Formal Gown at PromGirl
  • Morganite
  • Water

Strapless Long Prom Dress by Alyce

$198.00 $99.00 AL-35595
In Stock Buy Long Strapless Sweetheart Evening Gown at PromGirl
  • Electric Pink

Strapless Beaded Gown by Flirt

$278.00 $99.00 FL-P5830
In Stock Buy Floor Length Strapless Chiffon Gown at PromGirl
  • Wow Pink

Strapless Formal Gown by Alyce 35442

$230.00 $99.00 AL-35442
In Stock Buy Sleeveless Floor Length Dress at PromGirl
  • Royal Blue
  • Red

Sleeveless Floor Length Dress

$218.00 $109.00 FB-GL2091
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 Strapless Sequin Covered Dress at PromGirl
  • Ivory

Strapless Sequin Covered Dress

$230.00 $115.00 SK-3428
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 Full Length Strapless Sweetheart Dress at PromGirl
  • Electric Pink

Full Length Strapless Sweetheart Dress

$238.00 $119.00 LF-20168
In Stock Buy Floor Length Prom Dress by Xcite at PromGirl
  • Black
  • Fuchsia
  • White

Floor Length Prom Dress by Xcite

$238.00 $119.00 XC-30563
In Stock Buy Full Length Strapless Sweetheart Dress at PromGirl
  • Hot Fuchsia
  • Wisteria
  • Marine Blue

Full Length Strapless Sweetheart Dress

$238.00 $119.00 LF-19566
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 Floor Length Strapless Sweetheart Dress at PromGirl
  • Coral
  • Tiffany Blue

Floor Length Strapless Sweetheart Dress

$249.00 $124.00 CD-GL-G243
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 Mori Lee Strapless Dress at PromGirl
  • Bright Coral

Short Beaded Dress by Mori Lee 9252

$250.00 $125.00 ML-9252
In Stock Buy Strapless Empire Waist Formal Gown at PromGirl
  • Orchid

Strapless Empire Waist Formal Gown

$250.00 $125.00 ST-12468
In Stock Buy Short Strapless Party Dress at PromGirl
  • Blush

Short Strapless Party Dress

$129.00 BD-797442
In Stock Buy Short Strapless Sweetheart JVN by Jovani Dress at PromGirl
  • Red
  • Black
  • Royal

Short Strapless Homecoming JVN by Jovani Dress

$258.00 $129.00 JO-JVN-JVN91202
In Stock Buy Floor Length Strapless Xcite Dress at PromGirl
  • Watermelon
  • Purple
  • Cobalt

Floor Length Strapless Xcite Dress

$258.00 $129.00 XC-30510
In Stock Buy Floor Length Strapless Sweetheart JVN by Jovani Dress at PromGirl
  • Blush

Strapless Prom Gown JVN by Jovani

$270.00 $129.00 JO-JVN-JVN2563
In Stock Buy Floor Length Sleeveless Prom Dress at PromGirl
  • Off White
  • Mint

Floor Length Sleeveless Prom Dress

$264.00 $132.00 CD-GL-G358
In Stock Buy Long Strapless Sequin Dress at PromGirl
  • Green

Long Strapless Sequin Dress

$498.00 $138.00 LF-17369
In Stock Buy Short A-Line Sweetheart Dress at PromGirl
  • Magenta
  • Watermelon
  • Ultra Green

Short Party Dress

$138.00 NA-2824
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 Long Strapless Open Back Ombre Gown at PromGirl
  • Watermelon
  • Turquoise
  • Majestic Purple

Long Strapless Open Back Ombre Gown

$278.00 $139.00 LF-19686
In Stock Buy Strapless Empire Waist Chiffon Gown at PromGirl
  • Marine Blue
  • Spearmint
  • Purple

Strapless Empire Waist Chiffon Gown

$278.00 $139.00 FA-7366
In Stock Buy Elegant Strapless Sweetheart Gown at PromGirl
  • Light Mint
  • Light Purple

Long Strapless Dress by La Femme 20046

$278.00 $139.00 LF-20046
In Stock Buy La Femme 16977 Strapless Dress at PromGirl
  • Light Silver

Open Back Strapless Gown by La Femme

$338.00 $142.00 LF-16977
In Stock Buy Short Strapless Sweetheart Dress by Atria at PromGirl
  • Ivory

Short Strapless Sweetheart Dress by Atria

$286.00 $143.00 AT-AC81533
* 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.