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Long Formal Party Dresses & Formal Gowns

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Faviana 11225 Electric Blue side view v-neck satin-finish jersey mermaid gown with ruched open backFaviana 11225 Electric Blue alternate view v-neck satin-finish jersey mermaid gown with ruched open back
A woman modeling a floor-length silver sequined gown with a sweetheart neckline, fitted bodice, and mermaid silhouette on a plain beige studio background.A woman modeling a floor-length silver sequined gown with thin straps, a fitted silhouette, and a long train against a plain beige studio background.
Portia and Scarlett PS22036 Sale price$ 11,171
Clarisse 62100 Light Jade Green front view fully beaded sequin v-neck fitted trumpet prom gown with open back sweep train formal prom gownClarisse 62100 Light Jade Green back view fully beaded sequin open back fitted trumpet prom gown with crossing beaded straps evening gown
Clarisse 62164 Baby Pink prom dress front view with beaded floral appliqués, fitted sweetheart corset silhouette, high slit, formal prom gownClarisse 62164 Baby Pink prom dress back view with lace-up corset back, open back, fitted sheath train, evening gown
Faviana ES10890 Cherry front view fitted stretch satin gown with open crisscross backFaviana ES10890 Cherry back view fitted stretch satin gown with open crisscross back
Faviana 11004 Light Pink back view strapless square-neck fit-and-flare gown with floral appliquesFaviana 11004 Light Pink side view strapless square-neck fit-and-flare gown with floral appliques
Clarisse 62274 Sapphire Blue front view strapless sweetheart beaded corset A-line satin prom gown with high front slit, formal prom gownClarisse 62274 Sapphire Blue back view open back strapless beaded corset A-line satin prom gown, evening gown, elegant floor-length silhouette photographed in boutique studio lighting
Clarisse 810708 Fuchsia front view fitted satin prom gown with beaded sequin corset bodice, spaghetti straps, high front slit, formal prom gownClarisse 810708 Fuchsia back view open crisscross lace-up back fitted satin prom gown with beaded corset bodice, sweep train, evening gown
Clarisse 62201 Plum Purple front view fitted satin prom gown with beaded lace illusion bodice, V-neckline, high front slit, formal prom gownClarisse 62201 Plum Purple back view fitted satin prom gown with crisscross lace-up open back, sweep train, boned illusion bodice, evening gown
Ladivine CD728 Silver Nude strapless sheer beaded mermaid gown with subtle train, front viewLadivine CD728 Silver Nude beaded mermaid gown, back view of sheer bodice and train
LaDivine KV1121 dusty blue off-shoulder floral satin sheath prom gown — front view with high slitLaDivine KV1121 dusty blue — angled view of the floral satin bodice and parting thigh slit
Clarisse 62204 Peacock front view fitted lace corset prom gown with beaded floral appliqués, sweetheart neckline, high front slit, formal prom gownClarisse 62204 Peacock back view fitted jersey prom gown with full open back, spaghetti straps, sweep train, evening gown
Clarisse 62112Clarisse 62112
Faviana 11251 Light Yellow prom dress front view with beaded floral appliqués, v-neck fitted silhouette, high slit, formal prom gownFaviana 11251 Light Yellow prom dress back view with open crisscross lace-up closure, fitted silhouette, sweep train, evening gown
Faviana 11002 Black front view long fitted halter satin gown with floral appliquésFaviana 11002 Black back view long fitted halter satin gown with floral appliqués
Clarisse 62296 Lavender front view fitted beaded illusion corset prom gown with sweetheart neckline high slit and liquid satin skirt formal prom gownClarisse 62296 Lavender back view fitted beaded corset gown with crisscross lace-up open back and satin train evening gown prom night
Faviana 11405 Cherry front view v-neck fitted satin gown with ruched waist, beaded appliqués & high slitFaviana 11405 Cherry full-length front view v-neck fitted satin gown with ruched waist, beaded appliqués & high slit
Clarisse 62184 Steel Blue prom gown front view, metallic stretch jersey, strapless sweetheart corset bodice with high front slit and sweep train, formal prom gownClarisse 62184 Steel Blue prom gown back view, fully open back with visible boning cage, metallic stretch jersey fitted silhouette with sweep train, evening gown
Faviana 11402 Light Pink front view fitted satin gown with floral-appliqué bodice and open backFaviana 11402 Light Pink back view fitted satin gown with floral-appliqué bodice and open back
Clarisse 811109 Fuchsia prom dress front view with beaded corset bodice, floral appliqués, strapless square neckline, fitted column silhouette, formal prom gownClarisse 811109 Fuchsia prom dress back view with fully open lace-up corset back, beaded floral appliqués, sweep train, evening gown
Faviana E11201 Sage Green prom dress with stretch satin, beaded floral appliqués, scoop neckline, mermaid silhouette, front view, formal evening gownFaviana E11201 Sage Green prom dress with crisscross lace-up open back, stretch satin, beaded floral appliqués, mermaid silhouette, back view, evening gown
Faviana 11010 Light Blue front view beaded embroidery v-neck fitted satin gown with high slitFaviana 11010 Light Blue back view beaded embroidery v-neck fitted satin gown with high slit
Clarisse 62130 Sage Green prom dress front view with crystal beaded illusion sweetheart bodice, boning, high front slit, sweep train, fitted silhouette, formal prom gownClarisse 62130 Sage Green prom dress back view showing full open crisscross lace-up back, fitted jersey skirt, sweep train, evening gown
Ladivine CD721 blue — front view of the cool blue strapless beaded tulle A-line gownLadivine CD721 gold — back view of the crisscross corset lace-up and tulle ballgown skirt
Portia and Scarlett PS26032 pink prom strapless boned corset mermaid gown in stretch satin with sweep train, high-back closure, front view, formal prom gownPortia and Scarlett PS26032 pink prom strapless corset mermaid gown showing structured high-back zipper closure in stretch satin, back view, evening gown
Ladivine J888 gold strapless sweetheart beaded tulle gown — front view of the prom silhouetteLadivine J888 gold — back view of the crisscross corset lace-up and beaded tulle skirt
Faviana 9592 Red front view beaded floral sweetheart fitted long gown with trainFaviana 9592 Red back view beaded floral sweetheart fitted long gown with train
Clarisse 62162 Yellow prom dress front view with beaded illusion corset bodice, boning, satin tiered ruffles, and front high slit, fitted silhouette, formal prom gownClarisse 62162 Yellow prom dress back view with fully open lace-up crisscross back, satin ruffle skirt, and short train, fitted evening gown
Faviana 11410Faviana 11410
Faviana 11410 Sale price$ 11,822
LaDivine CD722 clelo blue v-neck beaded fitted evening gown — celestial sky-blue front view for mother of the brideLaDivine CD722 clelo blue — rear-facing view showing the long-sleeve of the fitted evening gown
Faviana 11208 Navy front view beaded satin mermaid gown with crisscross open backFaviana 11208 Navy back view beaded satin mermaid gown with crisscross open back
Faviana 11209 Purple Amethyst front view strapless square-neck corset gown with beaded appliqués & slitFaviana 11209 Purple Amethyst full-length front view strapless square-neck corset gown with beaded appliqués & slit
Faviana 11404 Navy front view beaded satin corset fitted gown with high slit & trainFaviana 11404 Navy full-length front view beaded satin corset fitted gown with high slit & train
Ladivine J903 graphite silver strapless sweetheart glitter corset gown — deep charcoal-and-silver two-tone front view of the fitted prom and engagement formal with trainLadivine J903 graphite silver — rear-facing view of the crisscross-style corset back and graphite-silver glitter train
Ladivine CK2405 navy beaded strapless sweetheart ballgown — front view of the prom A-line silhouetteLadivine CK2405 navy — back view showcasing the crisscross corset lace-up and beaded bodice
Faviana 11414 Red back view sweetheart gown with lace appliqué bodice & high slitFaviana 11414 Red full-length back view sweetheart gown with lace appliqué bodice & high slit
Clarisse 62278 Royal Blue front view prom gown with smooth satin fabric, ruched fitted bodice, front high slit, and dramatic a-line train, formal prom gownClarisse 62278 Royal Blue back view prom gown with fully open back, sweeping satin overskirt train, sleeveless strapless construction, evening gown styling
Clarisse 62203 Red prom dress front view with beaded sequin illusion-corset bodice, sweetheart neckline, fluid satin skirt, formal prom gownClarisse 62203 Red prom dress back view with lace-up crisscross open back, sweep train, satin skirt, evening gown
Faviana 11255 Light Pink front view beaded illusion sweetheart fitted gown with high slit & trainFaviana 11255 Light Pink full-length front view beaded illusion sweetheart fitted gown with high slit & train
Portia and Scarlett PS26012 rose gold prom gown front view, fully beaded mesh, sweetheart strapless corset bodice, high slit, formal prom gownPortia and Scarlett PS26012 rose gold prom gown back view showing crisscross lace-up closure, fully beaded mesh, fitted silhouette, evening gown
Faviana 11400 Light Yellow front view fitted illusion corset gown with floral appliqués & high slitFaviana 11400 Light Yellow back view fitted illusion corset gown with floral appliqués & high slit
Portia and Scarlett PS26026 black prom dress front view, glitter stretch jersey, strapless sweetheart corset bodice with boning, fitted silhouette with high slit, formal prom gownPortia and Scarlett PS26026 black prom dress back view, glitter stretch jersey, exposed upper back, fitted floor-length silhouette with sweep train, evening gown
Ladivine CD727 Sage Green strapless beaded bodice fitted gown with thigh-high slit, front viewLadivine CD727 Sage Green beaded gown, back view of strapless fitted bodice silhouette
LaDivine J886 red scoop beaded fitted evening gown — vibrant scarlet front view for formalLaDivine J886 red — rear-facing view showing the long-sleeve with high slit of the fitted evening gown
Clarisse 62294Clarisse 62294
Clarisse 62294 Sale price$ 8,251
Faviana 9606Faviana 9606
Clarisse 62104 Iridescent Purple front view strapless sweetheart corset prom gown with crystal beading, metallic jersey, fitted silhouette, formal prom gownClarisse 62104 Iridescent Purple back view open-back corset prom gown with sweep train, crystal-beaded bodice, full back exposure, evening gown
Ellie Wilde EW37084 Hot Pink and Royal Blue editorial prom gown with satin, floral appliqués, sweetheart neckline, boned corset bodice, formal prom gownEllie Wilde EW37084 Diamond White front view prom gown with satin, illusion side panel, strapless sweetheart neckline, fitted corset silhouette, evening gown

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!