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Long Formal Party Dresses & Formal Gowns

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Sold outMayqueen MQ1750 long mauv flowy sleek & sexy dress w/straps. This dusty rose dress is perfect for bridesmaid dresses, simple wedding guest dress, prom dress, gala, black tie wedding. Plus sizes are available, evening party dress.jpgMayqueen MQ1750 long mauv flowy sleek & sexy dress w/straps. This dusty rose dress is perfect for bridesmaid dresses, simple wedding guest dress, prom dress, gala, black tie wedding. Plus sizes are available, evening party dress-b.jpg
May Queen MQ1750 Sale price$86 USD Regular price$131 USD
Sold outMayqueen RQ7811 long dusty blue v neck sexy fitted lace mermaid dress w/open back. Full length light blue gown is perfect for  enagagement/e-shoot dress, formal wedding guest, indowestern gown, evening party dress, prom, bridesmaid. Plus sizes avail.jpgMayqueen RQ7811 long dusty blue v neck sexy fitted lace mermaid dress w/open back. Full length light blue gown is perfect for  enagagement/e-shoot dress, formal wedding guest, indowestern gown, evening party dress, prom, bridesmaid. Plus sizes avail-b.jpg
May Queen RQ7811 Sale price$129 USD Regular price$263 USD
Sold outMayqueen RQ7823 long mauve v neck evening fitted lace dress w/straps. Full length light pink gown is perfect for  enagagement/e-shoot dress, formal wedding guest, indowestern gown, evening party dress, prom, bridesmaid. Plus sizes avail.jpgMayqueen RQ7823-long ivory sexy wedding dress w/v neck & open back. Formal lace mermaid dress is perfect wedding bridal dress, simple prom dress, court/civil wedding, second wedding, destination wedding dress, cheap wedding dress. Plus sizes avail-b.jpg
May Queen RQ7823 Sale price$173 USD Regular price$329 USD
Sold outMayqueen LK136 baby blue quinceanera off shoulder ball gown. Light blue sequin ball gown is perfect for engagement dress, wedding reception, indowestern party gown, sweet 16, debut, sweet 15, sweet 18. Plus sizes available for ballgowns.jpgMayqueen LK136 baby blue quinceanera off shoulder ball gown. Light blue sequin ball gown is perfect for engagement dress, wedding reception, indowestern party gown, sweet 16, debut, sweet 15, sweet 18. Plus sizes available for ballgowns-b.jpg
May Queen LK136 Sale price$297 USD Regular price$594 USD
Sold outMayqueen LK152 rose gold quinceanera off shoulder sequin ballgown. This rose gold shiny ball gown is perfect for engagement dress, wedding reception, indowestern party gown, sweet 16, debut, sweet 15, sweet 18. Plus sizes available for gold ballgowns.jpgMayqueen LK152 rose gold quinceanera off shoulder sequin ballgown. This rose gold shiny ball gown is perfect for engagement dress, wedding reception, indowestern party gown, sweet 16, debut, sweet 15, sweet 18.Plus sizes available for gold ballgowns-b.jpg
May Queen LK152 Sale price$297 USD Regular price$594 USD
Sold outMac Duggal 4715 champagne-beige fully-beaded fitted evening gown with fringe cap sleeves, scoop neck, high back, front view, formal gala gownMac Duggal 4715 champagne-beige fully-beaded fitted evening gown with high-back beaded coverage, back view, formal evening gown, elegant floor-length silhouette photographed in boutique studio lighting
Sold outFaviana 11436E Aqua plus size strapless sweetheart corset gown with tiered chiffon ruffles, floral appliqué trim, a-line silhouette, front view, sweet 16 ball gown, a prom favoriteFaviana 11436E Aqua plus size strapless sweetheart corset gown with full lace-up back, boning channels visible, tiered chiffon skirt, back view, prom dress
Sold outFaviana 11602 Powder Blue prom dress front view with v-neck, wide appliquéd straps, beaded floral mesh gown, fitted high-slit silhouette, evening gownFaviana 11602 Powder Blue prom dress full-length front view with v-neck, wide appliquéd straps, beaded floral mesh gown, fitted high-slit silhouette, evening gown
Sold outFaviana 11603 Dark Pacific Blue prom dress front view with floral lace bodice, beading, tiered chiffon ruffle skirt, V-neckline, spaghetti straps, formal prom gownFaviana 11603 Dark Pacific Blue prom dress full-length front view with floral lace bodice, beading, tiered chiffon ruffle skirt, V-neckline, spaghetti straps, formal prom gown
Sold outFaviana 11604 Light Pink strapless sweetheart mermaid prom gown with 3D floral-lace appliqués beaded skirt and boned corset bodice front view polished formal stylingFaviana 11604 Light Pink strapless sweetheart mermaid prom gown with 3D floral-lace appliqués beaded skirt and boned corset bodice full-length front view polished formal styling
Sold outFaviana 11604E Light Pink plus size strapless sweetheart mermaid prom gown with tulle 3D floral-lace appliqués boned corset bodice and train front view cocktail party dressFaviana 11604E Light Pink plus size mermaid prom gown structured corset back boning channels 3D floral-lace appliqués tulle skirt and train back view formal prom gown
Sold outFaviana 11606 Cherry prom dress front view with beaded corset bodice, sheer mesh panel, boning channels, strapless scoop neckline, cocktail party dressFaviana 11606 Cherry prom dress full-length front view with beaded corset bodice, sheer mesh panel, boning channels, strapless scoop neckline, cocktail party dress
Sold outFaviana 11606E Cherry plus-size prom dress back view with beaded corset bodice, sheer panel, boning channels, strapless scoop neckline, cocktail party dress
Sold outFaviana 11607 Dark Emerald prom dress front view with strapless sweetheart beaded corset, boning, stretch satin mermaid silhouette, evening gownFaviana 11607 Dark Emerald prom dress full-length front view with strapless sweetheart beaded corset, boning, stretch satin mermaid silhouette, evening gown
Sold outFaviana 11607E Dark Emerald prom dress front view featuring strapless sweetheart beaded lace corset bodice, boning, stretch satin mermaid silhouette, evening gownFaviana 11607E Dark Emerald prom dress back view with beaded floral lace corset, low back, stretch satin mermaid skirt, train, formal prom gown
Sold outFaviana 11611 Light Yellow prom gown front view with jersey fabric, all-over pearl embellishment, deep open back, fitted column silhouette, formal prom gownFaviana 11611 Light Yellow prom gown full-length front view with jersey fabric, all-over pearl embellishment, deep open back, fitted column silhouette, formal prom gown
Sold outFaviana 11616 Black prom gown front view with strapless sweetheart neckline, fully beaded mesh, structural boning, and fitted silhouette with polished formal stylingFaviana 11616 Black prom gown back view with beaded mesh fabric, lace-up crisscross back, open back exposure, and sweep train, formal evening gown
Sold outFaviana 11616E Black plus size prom gown front view with strapless sweetheart neckline, all-over beaded mesh, boned bodice, floral appliqués, and sweep train, semi-formal party dressFaviana 11616E Black plus size prom gown back view with strapless sweetheart neckline, all-over beaded mesh, boned bodice, floral appliqués, and sweep train, semi-formal party dress
Faviana 11619 Red prom dress front view, fully beaded mesh fitted gown with scoop sweetheart neckline, spaghetti straps, and Art Deco bead pattern, cocktail party dressFaviana 11619 Red prom dress full-length front view, fully beaded mesh fitted gown with scoop sweetheart neckline, spaghetti straps, and Art Deco bead pattern, cocktail party dress
Sold outFaviana 11628 Navy prom dress front view with stretch satin, large floral lace appliqués, sweetheart neckline, fitted silhouette, cocktail party dressFaviana 11628 Navy prom dress full-length front view with stretch satin, large floral lace appliqués, sweetheart neckline, fitted silhouette, cocktail party dress
Sold outFaviana 11633 Red prom dress in stretch satin with V-neck, open back, mermaid silhouette, front view, formal prom gownFaviana 11633 Red prom dress in stretch satin with V-neck, open back, mermaid silhouette, back view, formal prom gown
Sold outFaviana 11636 Navy front view strapless sweetheart fitted jersey prom gown with fully beaded bodice, ruched skirt, and front slit, evening gownFaviana 11636 Navy full-length front view strapless sweetheart fitted jersey prom gown with fully beaded bodice, ruched skirt, and front slit, evening gown
Faviana 11640 Royal front view beaded floral appliqué fitted prom gown in mesh with V-neckline spaghetti straps and boned bodice formal prom gownFaviana 11640 Royal full-length front view beaded floral appliqué fitted prom gown in mesh with V-neckline spaghetti straps and boned bodice formal prom gown
Sold outFaviana 11643 Black prom gown front view with tulle skirt, lace-up crisscross open back, beaded floral appliqués, mermaid silhouette, formal prom gownFaviana 11643 Black prom gown full-length front view with tulle skirt, lace-up crisscross open back, beaded floral appliqués, mermaid silhouette, formal prom gown
Faviana 11667 Seaglass front view strapless sweetheart fit-and-flare chiffon prom gown with boned ruched bodice and lace floral appliqué neckline with polished formal stylingFaviana 11667 Seaglass full-length front view strapless sweetheart fit-and-flare chiffon prom gown with boned ruched bodice and lace floral appliqué neckline with polished formal styling

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!