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Long Formal Party Dresses & Formal Prom Gowns

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Portia and Scarlett PS26013Portia and Scarlett PS26013
Portia and Scarlett PS26013 Sale price$709 USD
Portia and Scarlett PS26416CPortia and Scarlett PS26416C
Portia and Scarlett PS26416C Sale price$999 USD
Portia and Scarlett PS26012Portia and Scarlett PS26012
Portia and Scarlett PS26012 Sale price$819 USD
Clarisse 810708Clarisse 810708
Clarisse 810708 Sale priceFrom $358
Faviana 11004 Light PinkFaviana 11004 Light Pink
Faviana 11004 Sale price$478 USD
Faviana 11017 BlackFaviana 11017 Ruby
Faviana 11017 Sale price$438 USD
Portia and Scarlett PS26004Portia and Scarlett PS26004
Portia and Scarlett PS26004 Sale priceFrom $561
Portia and Scarlett PS26095Portia and Scarlett PS26095
Portia and Scarlett PS26095 Sale price$639 USD
Faviana ES10890 Light PinkFaviana ES10890 Light Pink
Faviana ES10890 Sale price$338 USD
Ladivine CD297 RedLadivine CD297 Red
Ladivine CD297 Sale priceFrom $246
Portia and Scarlett PS26002Portia and Scarlett PS26002
Portia and Scarlett PS26002 Sale price$839 USD
Portia and Scarlett PS26424CPortia and Scarlett PS26424C
Portia and Scarlett PS26424C Sale price$899 USD
Portia and Scarlett PS26022Portia and Scarlett PS26022
Portia and Scarlett PS26022 Sale price$679 USD
Portia and Scarlett PS25311 IvoryPortia and Scarlett PS25311
Portia and Scarlett PS25311 Sale price$482 USD
Portia and Scarlett PS26173Portia and Scarlett PS26173
Portia and Scarlett PS26173 Sale price$839 USD
Portia and Scarlett PS26223Portia and Scarlett PS26223
Portia and Scarlett PS26223 Sale price$569 USD
Portia and Scarlett PS26432CPortia and Scarlett PS26432C
Portia and Scarlett PS26432C Sale price$899 USD
Ladivine C163 RoyalLadivine C163 Royal
Ladivine C163 Sale price$279 USD
Portia and Scarlett PS26405CPortia and Scarlett PS26405C
Portia and Scarlett PS26405C Sale price$699 USD
Ladivine CD295 Paris BlueLadivine CD295 Paris Blue
Ladivine CD295 Sale priceFrom $222 Regular price$329 USD
Portia and Scarlett PS26215Portia and Scarlett PS26215
Portia and Scarlett PS26215 Sale price$969 USD
Portia and Scarlett PS26141Portia and Scarlett PS26141
Portia and Scarlett PS26141 Sale price$819 USD
Portia and Scarlett PS25308Portia and Scarlett PS25308
Portia and Scarlett PS25308 Sale price$790 USD
Ladivine CD0234 Lt BlueLadivine CD0234 Smoky Blue
Ladivine CD0234 Sale price$225 USD
Portia and Scarlett PS26450CPortia and Scarlett PS26450C
Portia and Scarlett PS26450C Sale price$889 USD
Portia and Scarlett PS26005Portia and Scarlett PS26005
Portia and Scarlett PS26005 Sale price$659 USD
Faviana 11010 RaspberryFaviana 11010 Raspberry
Faviana 11010 Sale price$478 USD
Portia and Scarlett PS26176Portia and Scarlett PS26176
Portia and Scarlett PS26176 Sale price$709 USD
Sold outWoman in a blue evening gown standing by a pool with 'Faviana' branding.Woman in a blue lace dress standing by a pool with 'Faviana' branding.
Faviana 11427 Sale price$538 USD
Portia and Scarlett PS26019Portia and Scarlett PS26019
Portia and Scarlett PS26019 Sale price$619 USD
Portia and Scarlett PS26175Portia and Scarlett PS26175
Portia and Scarlett PS26175 Sale price$639 USD
Ladivine CC398 Smoky BlueLadivine CC398 Smoky Blue
Ladivine CC398 Sale price$279 USD
Ladivine CD868 Dusty BlueLadivine CD868 Dusty Blue
Ladivine CD868 Sale price$189 USD
Ladivine CC475 Dusty RoseLadivine CC475 Dusty Blue
Ladivine CC475 Sale priceFrom $222
Woman wearing a yellow strapless gown on a white background with Faviana branding.Woman wearing a yellow evening gown with lace-up back, branded 'Faviana'.
Faviana 11416 Sale price$478 USD
Portia and Scarlett PS26010Portia and Scarlett PS26010
Portia and Scarlett PS26010 Sale price$599 USD
Portia and Scarlett PS24850CPortia and Scarlett PS24850C
Portia and Scarlett PS24850C Sale price$929 USD
Portia and Scarlett PS25984CPortia and Scarlett PS25984C
Portia and Scarlett PS25984C Sale price$989 USD
Portia and Scarlett PS26011Portia and Scarlett PS26011
Portia and Scarlett PS26011 Sale price$749 USD
Portia and Scarlett PS26026Portia and Scarlett PS26026
Portia and Scarlett PS26026 Sale price$789 USD
Ladivine CD791 Dusty BlueLadivine CD791 Burgundy
Ladivine CD791 Sale price$139 USD
Portia and Scarlett PS26052Portia and Scarlett PS26052
Portia and Scarlett PS26052 Sale price$969 USD
Ladivine CC416 GreeneryLadivine CC416 Greenery
Ladivine CC416 Sale price$289 USD
Woman wearing a light blue evening gown with lace details in an outdoor setting.Woman in a light blue evening gown with open back standing outdoors.
Faviana 11402 Sale price$441 USD
Ladivine C161 BlushLadivine C161 Blush
Ladivine C161 Sale priceFrom $188
Faviana 11081 NavyFaviana 11081 Navy
Faviana 11081 Sale price$438 USD
Portia and Scarlett PS26417CPortia and Scarlett PS26417C
Portia and Scarlett PS26417C Sale price$879 USD
Portia and Scarlett PS26412CPortia and Scarlett PS26412C
Portia and Scarlett PS26412C Sale price$879 USD

2025 Long Formal Party Dresses & Formal Prom Gowns
Check out our 2025 formal evening dress collection for your next prom, military ball, black tie wedding, or any other special occasion. Formal dresses are generally long and have elegant detailing such as sequin beading, embroidery, or flowy metallic. For an elegant and chic look, try a simple long, off shoulder dress with a flowy chiffon skirt. If you are looking for something sleek and sexy, try a fitted evening dress with a high slit and open back or a mermaid skirt with a plunging v neckline. If you need a sensational gown or a winter formal dress for your special occasion then browse through our collection and find your favorite dress from one of our designers like La Femme, Mac Duggal, JOVANI, Mayqueen, LaDivine and so many more! We also carry long sleeve elegant formal dresses for your next black tie event, gala, or social event. From a-line evening gowns, fit n flare, long sleeve and strapless ones, to mermaid and formal long dresses, and the classic black evening gowns, its all at MarlasFashions.com. Captivate the room in a stunning formal dress with a sweetheart neckline or off shoulder neckline in a chiffon or sexy bodycon, embroidered with sequins and jewels.

Tips on How to Find the Perfect Long Formal Dress
Here are a some tips on how to select a beautiful long formal for your next event.

Consider the Season & Venue - In the spring (outdoor settings and during daytime events): long party dresses in pastels and other bright hues look best. For evening events, celebrations in the winter, and parties at formal venues, bold colors or rich jewel tones are go-to shades for long formal dresses.

Get Inspired – Start getting ideas from Instagram and Pinterest or even check out what your favorite celebrities are wearing to their formal events this season. See flattering styles that match your personality? Then shop for formal evening dresses in similar designs to find the right one for you

Decide on Fabric and Color - Choose a formal dress in your favorite color or fabric or consider your skin tone. Then you can shop for formal evening gowns in your chosen shade or look for styles in your favorite textures. Go for a chiffon material if you like movement and a romantic look. Perhaps you like the way a long formal dress in jersey fabric hugs your curves. If you like a sparkly dress, go for a sequin dress.

Can Never go Wrong with a Black Formal Dress
Keep it Classic - When in doubt, a classic black formal dress is always in style.

Follow these tips and feel confident in your formal dress!