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Long Formal Party Dresses & Formal Prom Gowns

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La Femme 31374 BlackLa Femme 31374 Green
La Femme 31374 Sale priceCHF 229
Dancing Queen 4341Dancing Queen 4341
Dancing Queen 4341 Sale priceCHF 252
Mac Duggal 77023 MidnightMac Duggal 77023 Midnight
Mac Duggal 77023 Sale priceCHF 409
Elizabeth K GL3549 Baby PinkElizabeth K GL3549 Baby Pink
Elizabeth K GL3549 Sale priceCHF 915
La Femme 32828 Dark TealLa Femme 32828 Purple
La Femme 32828 Sale priceCHF 262
GLS by Gloria GL3459 FuchsiaGLS by Gloria GL3459 Smoky Blue
GLS by Gloria GL3459 Sale priceCHF 162
Atria 6869HAtria 6869H
Atria 6869H Sale priceCHF 413
La Femme - 27842 Scoop Neck Lace Fitted Dress In SilverLa Femme - 27842 Scoop Neck Lace Fitted Dress In Silver
La Femme 27842 Sale priceCHF 311 Regular priceCHF 506
Alyce Paris 61851 Barbie PinkAlyce Paris 61851 Barbie Pink
Alyce Paris 61851 Sale priceCHF 316
Clarisse 810915 Iridescent FuchsiaClarisse 810915 Iridescent Fuchsia
Clarisse 810915 Sale priceCHF 327
La Femme - 27942 Illusion Floral Lace A-Line Dress In BlueLa Femme - 27942 Illusion Floral Lace A-Line Dress In Silver & Gray
La Femme 27942 Sale priceCHF 359 Regular priceCHF 472
Sold outWoman wearing a purple sequin gown with a slit on a white background, branded 'Faviana'.Woman wearing a purple sequin evening gown with a deep back, on a white background with Faviana branding.
Faviana 11412 Sale priceCHF 442
Sold outAndrea and Leo A1348 English VioletAndrea and Leo A1348 English Violet
Andrea and Leo A1348 Sale priceCHF 280
May Queen RQ8145 Ivory NudeMay Queen RQ8145 Ivory Nude
May Queen RQ8145 Sale priceCHF 316
La Femme - 30755 Tulle Embroidered Sweetheart Dress In PinkLa Femme - 30755 Tulle Embroidered Sweetheart Dress In Pink
La Femme 30755 Sale priceCHF 328
La Femme 32528 Dusty BlueLa Femme 32528 Dusty Blue
La Femme 32528 Sale priceCHF 492
Jessica Angel 2622 Dark EmeraldJessica Angel 2622 Dark Emerald
Jessica Angel 2622 Sale priceCHF 399
La Femme 32862La Femme 32862
La Femme 32862 Sale priceCHF 386
May Queen RQ8147 Ivory NudeMay Queen RQ8147 Ivory Nude
May Queen RQ8147 Sale priceCHF 253
La Femme 32640 Dark EmeraldLa Femme 32640 Dark Emerald
La Femme 32640 Sale priceCHF 226
La Femme 32716 CreamLa Femme 32716 Cream
La Femme 32716 Sale priceCHF 386
Alyce Paris 61571 EmeraldAlyce Paris 61571 Emerald
Alyce Paris 61571 Sale priceCHF 325
Terani Couture 1812M6657 In PinkTerani Couture 1812M6657 In Pink
Terani Couture 1812M6657 Sale priceCHF 547
Andrea and Leo A1342 RoseAndrea and Leo A1342 Rose
Andrea and Leo A1342 Sale priceCHF 175 Regular priceCHF 366
La Femme 29481 In BlueLa Femme 29481 In Blue
La Femme 29481 Sale priceCHF 328 Regular priceCHF 393
GLS by Gloria GL3135 Baby BlueGLS by Gloria GL3135 Baby Blue
GLS by Gloria GL3135 Sale priceCHF 301 Regular priceCHF 601
SCALA 61313 BlackSCALA 61313 Black
SCALA 61313 Sale priceCHF 418
La Femme 31204 in PurpleLa Femme 31204 in Purple
La Femme 31204 Sale priceCHF 295
Mac Duggal 20405 In BlackMac Duggal 20405 In Black
Mac Duggal 20405 Sale priceCHF 655
May Queen RQ7944 GreenMay Queen RQ7944 Green
May Queen RQ7944 Sale priceCHF 106 Regular priceCHF 165
La Femme 32714 Light PeriwinkleLa Femme 32714
La Femme 32714 Sale priceCHF 386
Portia and Scarlett PS25339 BlackPortia and Scarlett PS25339 Black
Portia and Scarlett PS25339 Sale priceCHF 268
Ieena Duggal 26714 In OrangeIeena Duggal 26714 In Orange
Ieena Duggal 26714 Sale priceCHF 340
Jovani 09154 EmeraldJovani 09154 Emerald Back
Jovani 09154 Sale priceCHF 976 Regular priceCHF 982
Jessica Angel 2536 Black MultiJessica Angel 2536 Black Multi
Jessica Angel 2536 Sale priceCHF 455
La Femme 32952 Dark BerryLa Femme 32952 Dark Berry
La Femme 32952 Sale priceCHF 262
Portia and Scarlett PS26199Portia and Scarlett PS26199
Portia and Scarlett PS26199 Sale priceCHF 906
La Femme 32366 NudeLa Femme 32366 Nude
La Femme 32366 Sale priceCHF 459
Faviana S10817 Hunter GreenFaviana S10817 Hunter Green
Faviana S10817 Sale priceCHF 328
La Femme 33085 BronzeLa Femme 33085 Bronze
La Femme 33085 Sale priceCHF 245
Portia and Scarlett PS25233 PinkPortia and Scarlett PS25233 Pink
Portia and Scarlett PS25233 Sale priceCHF 420
Jessica Angel 2640 RoyalJessica Angel 2640 Royal
Jessica Angel 2640 Sale priceCHF 362
SCALA 60521 SunflowerSCALA 60521 Sunflower
SCALA 60521 Sale priceCHF 385
Portia and Scarlett PS26177
Portia and Scarlett PS26177 Sale priceCHF 606
Faviana S10848 OrangeFaviana S10848 Orange
Faviana S10848 Sale priceCHF 278
Portia and Scarlett PS25229 Black
Portia and Scarlett PS25229 Sale priceCHF 535
Mayqueen RQ7864 long royal blue off shoulder sequin top evening gown. Full length flowy dress w/ tulle skirt is perfect for  enagagement/e-shoot dress, sweet 16, debut, formal evening party dress, prom, engagement, wedding reception. Plus sizes avail.jpgMayqueen RQ7864 long royal blue off shoulder sequin top evening gown. Full length flowy dress w/ tulle skirt is perfect for  enagagement/e-shoot dress,sweet 16, debut, formal evening party dress, prom, engagement, wedding reception. Plus sizes avail-b.jpg
May Queen RQ7864 Sale priceCHF 115 Regular priceCHF 282
Faviana 11050 MintFaviana 11050 Mint
Faviana 11050 Sale priceCHF 278

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!