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Long Formal Designer Gowns and Semi-Formal Dresses

Shop Simply Dresses to discover ideal dresses for every occasion. Simply Dresses has a vast selection of dresses for all your special occasions, such as prom, weddings, homecoming, cocktail parties, holiday festivities, and casual outings. Read more...

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2,000 Dresses

Off-Shoulder Beaded Lace-Bodice Long Formal Dress
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Embroidered-Bodice Long V-Neck Chiffon Prom Dress
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Long Chiffon V-Neck Embroidered-Bodice Prom Dress
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Long Illusion-Sweetheart Mauve Lace Formal Dress
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Long V-Neck Glitter Prom Dress with Sheer Sides
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Open-Back Long Formal Satin Dress by Simply
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LP-SD-27924 In Stock

Open-Back Long Formal Satin Dress by Simply

$19 $149

Navy Mauve
Backless Long Sequin Formal Prom Dress by PromGirl
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Ruffled Chiffon V-Neck Long Simply Prom Dress
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Off-the-Shoulder Long Formal Prom Dress by Faviana
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Open-Back Simply Formal Gown with Deep V-Neckline
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Low V-Neck Long Red Prom Dress by Dave and Johnny
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Caged-Back Deep-V-Neck Long Black Formal Dress
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Faviana Long V-neck Prom Dress
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FA-7755 In Stock

Faviana Long V-neck Prom Dress

$149 $250

Wine Dusty Pink Teal +5
Plunging-V-Neck Faux-Wrap Long Formal Holiday Dress
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Illusion-Bodice Long Satin Prom Dress with Pockets
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Off-the-Shoulder Sweetheart Long Formal Dress
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PromGirl Glitter Metallic Long Formal Prom Dress
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Lace High-Low Prom Dress with Satin Belt
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LP-24056-1 In Stock

Lace High-Low Prom Dress with Satin Belt

$39 $99

Navy Mauve Burgundy
Open-Back Long Empire-Waist Prom Dress by PromGirl
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Long Plus-Size Strapless Sweetheart Prom Dress
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SC-PL-PG-2003 In Stock

Long Plus-Size Strapless Sweetheart Prom Dress

$49 $229

Burgundy Navy
Off-Shoulder Sweetheart Prom Dress by PromGirl
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Short Lace A-Line Semi-Formal Party Dress
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PromGirl Vintage-Inspired Long Sequin Prom Dress
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Floor-Length Formal Prom Gown with Sequin Skirt
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Ivory Long Organza Ball Gown with Floral Print
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BL-FL-PL-190501-1 In Stock

Ivory Long Organza Ball Gown with Floral Print

$149 $249

Ivory/Red Ivory/Teal
Long Tulle V-Neck Lace-Bodice Formal Prom Dress
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JVNX by Jovani Long A-Line Formal Gown in Blush
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Faux-Wrap V-Neck Long Prom Dress
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DQ-2905 In Stock

Faux-Wrap V-Neck Long Prom Dress

$99 $199

Royal Burgundy Green Black
JVNX by Jovani Long Embroidered-Bodice Formal Dress
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Open-Back Long Formal Dress with Deep V-Neck
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LUX-LD3452-S In Stock

Open-Back Long Formal Dress with Deep V-Neck

$49 $189

Red Black
Formal Long V-Neck Prom Dress with Back Cut Outs
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Metallic-Crepe Deep-V-Neck Long Formal Dress
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Long Formal Prom Dress with Beaded Caged Back
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Cap-Sleeve Deep-V-Neck Long Lace Formal Dress
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Long Faviana A-Line Prom Dress with Open Back
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Short Lace Wedding-Guest Dress with Keyhole Back
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