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Long Formal Party Dresses & Formal Gowns

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Andrea And Leo A1231 Dusty RoseAndrea And Leo A1231 Amethyst
Andrea and Leo A1231 Sale price$ 5,655 Regular price$ 11,310
Mac Duggal 2260 Navy Blue front view high-neck beaded mermaid gown in stretch jersey with scattered crystal embellishments, formal prom gownMac Duggal 2260 Navy Blue back view fully covered high-back mermaid gown with scattered beading and sleeveless clean armholes, evening gown, styled for prom
Mac Duggal 5679 silver champagne beige front view one-shoulder a-line gown in fully beaded sequin mesh with floral appliqué, prom formal gownMac Duggal 5679 silver champagne beige back view open-back one-shoulder fully beaded sequin gown, prom evening gown, elegant floor-length silhouette photographed in boutique studio lighting
LaDivine CR877 navy off-shoulder satin sheath mother of the bride gown — front view with ruffle detailLaDivine CR877 navy — back view of the off-shoulder satin sheath and trailing sweep train
 GLS by Gloria GL3134 LavenderGLS by Gloria GL3134 Lavender
GLS by Gloria GL3134 Sale price$ 5,982 Regular price$ 11,951
GLS by Gloria GL2884 CappuccinoGLS by Gloria GL2884 Cappuccino
GLS by Gloria GL2884 Sale price$ 5,417 Regular price$ 10,833
Ladivine BD111 OrchidLadivine BD111 Burgundy
Ladivine BD111 Sale price$ 1,634 Regular price$ 3,997
May Queen RQ8230May Queen RQ8230
May Queen RQ8230 Sale price$ 6,058
Atria 6866HAtria 6866H
Atria 6866H Sale price$ 8,596
Ladivine Bridal WL088 off-white strapless sweetheart mermaid lace gown with crisscross back — front-facing full viewBack view of Ladivine WL088 off-white mermaid lace bridal gown — crisscross back straps and flared tulle train
Ladivine CD414 black sleeveless sweetheart chiffon A-line gown — sharp front view with crisscross backLadivine CD414 blue grey sky blue — dual-toned chiffon bridesmaid gown with cool steel-blue and sky-blue
Atria 6770HAtria 6770H
Atria 6770H Sale price$ 8,106
Ladivine 15721 Emerald strapless ballgown with gold floral applique, quinceanera gownLadivine 15721 Emerald quinceanera ballgown with lace-up back, back view sweet-16 gown
Ladivine 15721 Sale price$ 13,685
Ieena Duggal 11281 In NeutralIeena Duggal 11281 In Neutral
Ieena Duggal 11281 Sale price$ 6,447 Regular price$ 9,991
Ladivine CC0504 silver strapless sweetheart metallic beaded corset gown — ice-silver front view with high slitLadivine CC0504 silver — rear-facing view of the crisscross back and metallic satin train
Terani Couture 252M5342Terani Couture 252M5342
Terani Couture 252M5342 Sale price$ 11,298
Ladivine CD233 Rose GoldLadivine CD233 Silver
Ladivine CD233 Sale price$ 2,891 Regular price$ 4,901
Ladivine CR883 burgundy off-shoulder beaded satin fitted gown with high slit and train — rich wine-red head-on front view of the mother-of-the-bride and wedding-guest formalLadivine CR883 burgundy — rear-facing view of the off-shoulder beaded satin gown showing the fitted back construction and burgundy train with high slit
Ladivine J883 Midnight Grey lace appliqué illusion bateau A-line gown with sleeves, front viewLadivine J883 Midnight Grey lace gown, back view of illusion bodice and long sleeves for MOB
Ladivine CDS565 royal blue strapless sweetheart beaded satin corset gown — straight-on view of the fitted formal silhouetteLadivine CDS565 royal blue — lace-up corset closure and satin train photographed from behind
Mac Duggal 68908 Evening Dress - Taupe - ABMac Duggal 68908 Evening Dress - Taupe - BK
Andrea and Leo A1332 BlueAndrea and Leo A1332 Blue
Andrea and Leo A1332 Sale price$ 5,404 Regular price$ 10,204
Elizabeth K GL3835Elizabeth K GL3835
Elizabeth K GL3835 Sale price$ 12,517
La Femme 32966 IndigoLa Femme 32966 Indigo
La Femme 32966 Sale price$ 5,228
Ieena Duggal 49087 In BlackIeena Duggal 49087 In Black
Ieena Duggal 49087 Sale price$ 7,314
Clarisse 62219 Iridescent Blue front view prom dress with sequin tulle, beaded leaf-and-vine embroidery, deep V-neckline A-line silhouette, formal prom gownClarisse 62219 Iridescent Blue back view prom dress with open back, all-over sequin beading, wide shoulder straps A-line silhouette, evening gown
Elizabeth K GL3571 Ivory/BlueElizabeth K GL3571 Ivory/Blue
Elizabeth K GL3571 Sale price$ 14,502
May Queen MQ2208May Queen MQ2208
May Queen MQ2208 Sale price$ 3,770
Dancing Queen 4230Dancing Queen 4230
Dancing Queen 4230 Sale price$ 5,831
Ladivine CM392 dusty blue strapless sweetheart beaded satin tulle corset gown with detachable overskirt and crisscross back — muted dusty-blue plus-size front view of the prom and engagement formalLadivine CM392 dusty blue — rear-facing view of the crisscross back straps and detachable tulle overskirt with satin train on the plus-size sweetheart gown
Ladivine CD406 red chiffon sweetheart bridesmaid gown — head-on view of the fitted silhouette with crisscross back and high slitLadivine CD406 red — rear-facing view of the crisscross back straps and fitted chiffon skirt
GLS by Gloria GL3158 - Embroidered Lace Tulle Gown Special Occasion Dress XS / Cappuccino/GrayGLS by Gloria GL3158 - Embroidered Lace Tulle Gown Special Occasion Dress
GLS by Gloria GL3158 Sale price$ 8,634 Regular price$ 17,254
Faviana S10847 PurpleFaviana S10847 Purple
Faviana S10847 Sale price$ 6,987
Mac Duggal 79390 Cranberry front view long-sleeve chiffon A-line gown with jeweled beaded waistband, V-neckline, floor-length formal black-tie event dressMac Duggal 79390 Midnight Blue back view long-sleeve chiffon A-line gown with high covered back concealed zipper, floor-length formal mother of the bride styling
May Queen MQ2178May Queen MQ2178
May Queen MQ2178 Sale price$ 4,147
La Femme - 27924 Short Sleeve Illusion Lace Chiffon Dress In BlueLa Femme - 27924 Short Sleeve Illusion Lace Chiffon Dress In Silver & Gray
La Femme 27924 Sale price$ 5,932 Regular price$ 7,955
May Queen RQ8158 SageMay Queen RQ8158 Sage
May Queen RQ8158 Sale price$ 4,801
May Queen RQ7932 PurpleMay Queen RQ7932 Purple
May Queen RQ7932 Sale price$ 4,826
Terani Couture 252C5507Terani Couture 252C5507
Terani Couture 252C5507 Sale price$ 10,065
Atria 7051HAtria 7051H
Atria 7051H Sale price$ 8,458
Mac Duggal 56417 Evening Dress - Ivory - ABMac Duggal 56417 Evening Dress - Ivory - BK
Ladivine CM360 Smoky Blue lace bodice tulle A-line gown with short sleeves, mother of the bride gownLadivine CM360 Smoky Blue tulle A-line gown with lace bodice, back view wedding guest gown
Ladivine CM360 Sale price$ 4,952
Mac Duggal 21104 navy front view off-shoulder mermaid gown in matte jersey with 3D floral rosettes formal prom gownMac Duggal 21104 navy back view open-back mermaid gown in smooth jersey with sweetheart neckline formal evening gown
dancingqueen_4543dancingqueen_4543
Dancing Queen 4543 Sale price$ 7,641
Atria 7040HAtria 7040H
Atria 7040H Sale price$ 8,634
La Femme - 27981 Quarter Sleeve Sheer Lace Dress In PinkLa Femme - 27981 Quarter Sleeve Sheer Lace Dress In Pink
La Femme 27981 Sale price$ 7,653 Regular price$ 11,499
Ladivine CD695 blue halter-neck beaded tulle fitted gown with open back and train — vibrant cobalt-blue  front view of the floor-length formal wedding guest and evening event dressLadivine CD695 blue — turned angle of the halter-neck open-back beaded tulle fitted silhouette in a rich cobalt-blue tone for formal evening events and black tie wedding receptions
Jessica Angel 2458 RedJessica Angel 2458 Red
Jessica Angel 2458 Sale price$ 10,896

2026 Long Formal Party Dresses & Formal Prom Gowns
Check out our 2026 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!