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Open Back Prom Dresses, Long Backless Evening Gowns & Low Back Dresses

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2901 Item

Portia and Scarlett PS25316 Pink prom dress front view with glitter tulle, pearl beading, deep v-neck ballgown, formal prom gownPortia and Scarlett PS25316 Lilac prom dress back view with open back, pearl beading, full ballgown skirt, evening gown
Portia and Scarlett PS25316 Sale price$1,000 CAD
Portia and Scarlett PS25240 Cobalt Fuchsia Pink Ice editorial group shot fully-sequined mermaid prom gown with glitter overlay sweep train one-shoulder formal prom gownPortia and Scarlett PS25240 Emerald back side view fully-beaded mermaid prom gown open back boned bodice sweep train evening gown
Portia and Scarlett PS25240 Sale price$519 CAD
Portia and Scarlett PS25262 Purple Pink prom strapless fully-beaded corset fitted gown with floral baroque sequin embellishment sweep train front view formal prom gownPortia and Scarlett PS25262 Purple Pink prom strapless fully-beaded corset fitted gown open back bare from shoulders to waist sweep train back view evening gown
Portia and Scarlett PS25262 Sale price$740 CAD
Portia and Scarlett PS25251 Light Blue prom dress front view with glitter sequin mesh, sweetheart corset bodice, mermaid silhouette, formal prom gownPortia and Scarlett PS25251 Red champagne beige Pink Teal champagne beige prom dress back view with fully open bare back, glitter sequin mermaid gown, evening gown
Portia and Scarlett PS25251 Sale price$650 CAD
Portia and Scarlett PS25206 Blue prom halter mermaid gown with beaded floral embellishment, open back, and sweeping train, front view, formal prom gownPortia and Scarlett PS25206 Blue prom fully open back halter mermaid dress with beaded waist trim and sweeping train, back view, evening gown styling
Portia and Scarlett PS25206 Sale price$650 CAD
Portia and Scarlett PS25242 Fuchsia prom dress front view with beaded corset bodice, halter neckline, high slit, fitted jersey silhouette, formal evening gownPortia and Scarlett PS25242 Fuchsia prom dress back view with fully open back, boned beaded corset panel, sweep train, fitted jersey silhouette, red carpet styling
Portia and Scarlett PS25242 Sale price$597 CAD
Portia and Scarlett PS25309 Light Blue front view prom dress in beaded tulle with 3D floral appliqués, off-shoulder illusion corset bodice, full a-line ballgown skirt, formal prom gownPortia and Scarlett PS25309 Light Blue back view prom dress showing open illusion boned bodice with floral beading, full tulle ballgown skirt with sweep train, evening gown
Portia and Scarlett PS25309 Sale price$870 CAD
Portia and Scarlett PS25269 lilac purple and pink front editorial prom dress with sequin tulle, 3D floral appliqués, strapless sweetheart corset bodice, formal prom gownPortia and Scarlett PS25269 blue back view prom dress with open back boned corset, sequin tulle tiered skirt, fitted silhouette, evening gown
Portia and Scarlett PS25269 Sale price$909 CAD
Portia and Scarlett PS25331 Silver prom dress front view fully beaded strapless sweetheart fitted gown with boning open back and sweep train formal prom gownPortia and Scarlett PS25331 Black prom dress back view strapless beaded fitted gown with lace-up open back corset closure and full back exposure evening gown
Portia and Scarlett PS25331 Sale price$870 CAD
Portia and Scarlett PS25200 pink purple blue multi-color prom dress with stretch jersey, crystal beading, mermaid silhouette, front view, formal prom gownPortia and Scarlett PS25200 pink purple blue multi-color prom dress open back with boning and sweep train, mermaid silhouette, back view, evening gown
Portia and Scarlett PS25200 Sale price$857 CAD
Portia and Scarlett PS25301 Blue and Blush Pink front editorial view fully beaded glitter halter mermaid gown with court train, formal prom gownPortia and Scarlett PS25301 Blush Pink back view fully beaded glitter open-back halter mermaid prom gown with boning and court train, evening gown
Portia and Scarlett PS25301 Sale price$870 CAD
Portia and Scarlett PS25603E Black Lilac Pink prom dress front view with floral sequin beaded skirt boned corset bodice high slit strapless square neckline formal prom gownPortia and Scarlett PS25603E Black Lilac Pink prom dress back view with open back boned corset structure sweep train floral sequin skirt evening gown
Portia and Scarlett PS25603E Sale price$852 CAD
Portia and Scarlett PS25311 ivory white prom ballgown with glitter tulle skirt, pearl crystal beaded corset bodice, sweetheart neckline, front view, formal prom gownPortia and Scarlett PS25311 pink blue lilac back editorial view open-back prom ballgown with glitter tulle skirt, beaded corset bodice, spaghetti straps, evening gown
Portia and Scarlett PS25311 Sale price$719 CAD
Portia and Scarlett PS25602E Black Pink Lilac prom gown front view beaded corset bodice floral appliqués stretch satin high slit fitted formal evening gownPortia and Scarlett PS25602E Pink Black Lilac prom gown back view open corset bodice boning channels stretch satin skirt sleeveless fitted evening gown
Portia and Scarlett PS25602E Sale price$795 CAD
Portia and Scarlett PS25298 blue prom dress front view with sequin beading one-shoulder tulle cape fitted high slit formal prom gownPortia and Scarlett PS25298 blue prom dress back view fully open back sequin beaded one-shoulder fitted silhouette evening gown
Portia and Scarlett PS25298 Sale price$650 CAD
Portia and Scarlett PS25324 pink prom dress front view fully beaded sequin v-neck fitted gown with feather hem and high slit, formal prom gownPortia and Scarlett PS25324 pink prom dress back view fully beaded open back illusion panel fitted gown with feather trim train, evening gown
Portia and Scarlett PS25324 Sale price$1,039 CAD
Portia and Scarlett PS25308 lilac pink blue front view glitter sequin sweetheart corset ballgown with tulle skirt spaghetti straps and sweep train prom gownPortia and Scarlett PS25308 lilac pink blue back view glitter sequin lace-up corset back open back ballgown with sweep train formal prom gown
Portia and Scarlett PS25308 Sale price$1,026 CAD
Portia and Scarlett PS25189 Gold prom dress front view with satin fabric, beaded corset bodice, deep V halter neckline, fitted silhouette, formal prom gownPortia and Scarlett PS25189 Gold prom dress side back three-quarter view with open back, sweeping train, high front slit, fitted satin silhouette, evening gown
Portia and Scarlett PS25189 Sale price$584 CAD
Portia and Scarlett PS25320 emerald and fuchsia prom strapless sweetheart metallic jersey fitted gown with beaded bodice and ruching front view formal prom gownPortia and Scarlett PS25320 emerald and fuchsia prom strapless open back metallic jersey fitted gown with ruching and sweep train back view evening gown
Portia and Scarlett PS25320 Sale price$650 CAD
Portia and Scarlett PS25323 purple prom dress front view with sequin fabric, cut-out waist panels, strapless sweetheart neckline, fitted silhouette, formal prom gownPortia and Scarlett PS25323 purple prom dress back view showing full open back, train, 3D floral shoulder detail, sequin surface, evening gown
Portia and Scarlett PS25323 Sale price$870 CAD
Portia and Scarlett PS25267 light-blue fully beaded V-neck fitted long prom dress with rhinestone starburst mesh, editorial styling, formal prom gownPortia and Scarlett PS25267 cobalt back view fully beaded open V-back long prom dress with rhinestone mesh and deep plunging back, evening gown
Portia and Scarlett PS25267 Sale price$870 CAD

Open Back Prom Dresses 2025 and Long Backless Evening Gowns

Open back dresses are one of the most popular styles on the red carpet. Wearing a sleek and sexy open back or backless dress creates a show stopping statement at any occasion such as prom, black tie event, gala, formal wedding guest dress, or even an engagement. MarlasFashions in Canada carries a wide selection of open back evening gowns in a variety of different styles and is sized from 4 – 22 (petites to plus sizes).

Our open back prom dress collection consists of long formal evening gowns, short prom dresses, high neck backless dresses, strapless open back floor length dresses, and halter top formal prom dress. Or why not try a La Femme, Tarik Ediz, or Macduggal open back designer evening party dress.  We have a variety of colors of sexy open back prom dresses or formal gowns in deep low backs  to choose from like black, red, blush pink, aqua blue, royal blue, navy, or even white.

If you want something different, you can always go for a two piece prom dress with the top having an open back and a fitted skirt. And we definitely cannot forget about our plus size girls! We have a large collection of plus size open back or backless prom dresses. This open back collection is perfect for any special occasion, formal event, graduation, or even senior prom. There are so many styles to choose from even if you are on a budget. MarlasFashions backless prom dresses are affordable without breaking the bank.