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Long Formal Party Dresses & Formal Gowns

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Faviana 11208 Navy Blue prom dress front view with beaded satin, scoop neckline spaghetti straps, mermaid silhouette, evening gownFaviana 11208 Electric Blue prom dress back view with satin fabric, crisscross open back lace-up closure, mermaid silhouette, formal prom gown
Clarisse 62112Clarisse 62112
Faviana 11004 Light Pink strapless fit-and-flare prom gown front view with beaded 3D floral appliques mesh skirt square neckline formal evening gownFaviana 11004 Light Pink open lace-up crisscross back prom gown back view full back exposed ribbon tie closure formal evening gown
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
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
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
Faviana 11255 Ink Blue prom dress with tulle beaded mesh, sweetheart illusion bodice, fitted silhouette with high slit, formal prom gownFaviana 11255 Ink Blue prom dress back view with tulle beaded mesh, dramatic lace-up crisscross open back, fitted gown, evening gown
Faviana 11225 Electric Blue prom gown with V-neckline, satin-finish jersey, ruched open back, mermaid silhouette, spaghetti straps, front view, formal prom gownFaviana 11225 Electric Blue prom gown showing deep open back with vertical ruching, mermaid sweep train, spaghetti straps, back view, evening gown
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
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 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 11400 Yellow prom dress with illusion mesh corset bodice, 3D floral lace appliqués, fitted silhouette, and sweep train — formal prom gown, front viewFaviana 11400 Yellow prom dress open back view showing crisscross lace-up tie closure, full back exposure, and boned illusion bodice — 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
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
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
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 11209 Red prom front view gown with beaded appliqués, strapless corset bodice, high slit, sweep train, formal prom gownFaviana 11209 Red prom back view gown with crisscross lace-up open back, beaded corset, sweep train, evening gown
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
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
Faviana 11402 Seaglass front view fitted satin prom gown with floral-appliqué lace bodice, deep V-neckline, spaghetti straps, formal prom gownFaviana 11402 Seaglass back view fitted satin prom gown with fully open back, center back ruching, sweep train, evening gown
Faviana 11405 Cherry prom dress with satin fabric, beaded floral appliqués cascading from bodice, fitted silhouette, front view, formal prom gownFaviana 11405 Cherry prom dress with satin, dramatic open crisscross-lace back, fitted fitted silhouette, back view, evening gown
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 priceFrom $566
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
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 11002 Light Pink front view prom gown with stretch satin, floral appliqués and beading, fitted halter silhouette, formal prom gownFaviana 11002 Light Pink back view prom gown with open crisscross-strap back, stretch satin, sweep train, 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 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
Faviana ES10890 Light Pink prom dress front view in fitted stretch satin with scoop neck, spaghetti straps, and sweep train, formal prom gownFaviana ES10890 Light Pink prom dress back view showing fully open crisscross lace-up back with gathered hip detail, 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
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
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
Faviana 11010 Raspberry front view prom dress with beaded floral appliqué embroidery, deep V-neckline, fitted satin silhouette, formal prom gownFaviana 11010 Raspberry back view prom dress with crisscross lace-up open back, beaded satin, ruched lower back, sweep train, evening gown
Faviana 9592 Ink Blue prom dress with stretch satin, beaded floral appliqués on sweetheart bodice, fitted column silhouette, front view, formal evening gownFaviana 9592 Red prom dress showing crisscross lace-up open back, stretch satin fitted column with slight train, back view, formal prom gown
Faviana 11404 Dark Hunter Green prom dress front view with beaded satin, sweetheart neckline, corset bodice, formal prom gownFaviana 11404 Dark Hunter Green prom dress back view with crisscross lace-up, full open back, satin skirt, evening gown
Faviana 11410Faviana 11410
Faviana 11410 Sale price$650 USD
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 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
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
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
Faviana 11414 Red prom dress with lace appliqué bodice, sequin beading, sweetheart fitted silhouette, front view, formal prom gownFaviana 11414 Red prom dress with crisscross open back, lace-trimmed straps, fitted sweep train, back view, evening gown
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
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
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
Ladivine CD693 silver-nude off-shoulder beaded tulle corset gown — front view of the evening silhouetteLadivine CD693 silver-nude — back view of the high corset back and beaded tulle train
Faviana E11456 Dark Hunter Green prom dress front view with stretch jersey, sheer mesh illusion bodice, deep V-neck fitted silhouette, formal prom gownFaviana E11456 Dark Hunter Green prom dress back view with open crisscross lace-up back, boning detail, sweep train, evening gown
Clarisse 62241 Fuchsia prom dress front view with hot-stone scatter, strapless sweetheart corset bodice, high front slit, fitted jersey silhouette, formal prom gownClarisse 62241 Fuchsia prom dress back view with dramatically open back, sweep train, hot-stone embellishment, fitted jersey silhouette, evening gown red carpet styling
Ladivine CD736C black strapless sweetheart beaded satin fitted corset gown with crisscross back and high slit — polished dark plus-size head-on front view of the prom, pageant and holiday formal with trainLadivine CD736C blue strapless sweetheart beaded satin fitted corset gown with crisscross back and high slit — vivid cobalt-blue plus-size head-on front view of the floor-length prom and pageant formal
LaDivine T9003 black v-neck beaded fitted mermaid prom gown — polished dark front view for promLaDivine T9003 black — rear-facing view showing the long-sleeve fully-embellished of the fitted mermaid prom 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!