Long Prom Dresses: Elegant Floor-Length & Maxi Styles

Make a grand entrance in our breathtaking collection of long prom dresses. From the timeless volume of a floor-length ball gown to the sleek silhouette of a maxi evening dress, our range is designed to provide maximum glamour. Whether you are looking for long-sleeved lace or a flowing chiffon A-line, our free custom-made service ensures your gown is tailored to your exact height, giving you the perfect 'hollow-to-hem' fit.

▼ Styling Guide: Choosing the Perfect Long Gown

Trending Long Silhouettes: Ball Gowns, A-Lines, and Sheaths

Long prom dresses are the ultimate symbol of formal sophistication for UK Year 11 and Year 13 proms. For 2026, the trends favor full-length ball gowns with dramatic skirts and minimalist satin maxi dresses that offer a sleek, modern look. Whether you prefer the romanticism of long lace gowns or the sparkle of a sequined floor-length dress, a long silhouette provides a statuesque appearance that photographs beautifully from every angle.

The Perfect Length with Free Custom Tailoring

The biggest challenge with floor-length gowns is getting the length exactly right to match your height and your heels. A dress that is too long can be difficult to walk in, while one that is too short loses its formal impact. At HappyProm, we offer free custom sizing, including a specific 'hollow-to-hem' measurement. This ensures your made-to-measure long dress hits the floor at the perfect point, allowing you to move with confidence and grace all night long.

Quality Craftsmanship & Reliable UK Delivery

Our long formal dresses are crafted from premium fabrics such as multi-layered tulle, heavy-weight satin, and delicate chiffon. As a trusted UK-based prom store, HappyProm combines affordable prices with high-end craftsmanship. With fast UK delivery and a dedicated support team, we make finding your dream full-length gown easy and stress-free. Explore our 2026 collection today and find the perfect long dress for your milestone event.

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V-neck,sequin regular straps,cut out with sequins, cross band back,sheath style skirts are the detai..
£117.00 £104.00
Ex Tax: £104.00
Glitter Jeweled one shoulder, fitted tailor,high side slit, this formal dress is so charming.Silhoue..
£102.00
Ex Tax: £102.00
This princess style prom dress will make your prom night, your sweet 16 party memorable. Strapless n..
£89.00
Ex Tax: £89.00
Sequin and pleated bust,mermaid style with lace up back, this dress is the ideal choice for tall,sle..
£102.00 £92.00
Ex Tax: £92.00
Rhinestone decorated lace with V shape back is the top of this beautiful dress,tunic empire waist an..
£95.00
Ex Tax: £95.00
Couture Architecture Meets Pure Mid-Century GlamourStand out with unparalleled poise in the KSP105. ..
£160.20 £133.00
Ex Tax: £133.00
Applique decorated neck and bottom, tie up back, full length skirt , so charming and elegant.Silhoue..
£102.00
Ex Tax: £102.00
Special sequined plunge neckline, bow knot sash belt, sexy and fashion for girls to the special soci..
£98.60
Ex Tax: £98.60
3-D flowers embellished halter neckline, fresh and elegant; flower shape lace, beading and rhineston..
£88.00
Ex Tax: £88.00
Dazzling rhinestone decorated sheer lace top, crystal waistline, cream chiffon skirt, this dress is ..
£140.00 £120.00
Ex Tax: £120.00
This neutral gray color bridesmaid dress is divide with two parts by a sash belt,lace top, flare chi..
£100.00 £95.00
Ex Tax: £95.00
Beading embellished top, high halter neck, Y shape back, this formal prom dress with free color and ..
£130.00 £110.00
Ex Tax: £110.00
Front side split, plunging neckline, ciched high waisted, you will be mellow in this flawless and br..
£120.00 £102.00
Ex Tax: £102.00
Goddess one shoulder, zigzag rhinestone decorated front to back,full length hem, in light blue color..
£104.00
Ex Tax: £104.00
Features sequin sweetheart bodice, bodycon sheath silhouette and sweep train, so gorgeous ensembles;..
£130.00 £102.00
Ex Tax: £102.00
Fitted tailored Mermaid body shape, decorated with rhinestone, sexy side slit,show off and longer yo..
£132.00
Ex Tax: £132.00
Vintgage color combination of jewels decorated high neck and wastline,same color decorated back stra..
£131.00
Ex Tax: £131.00
Chest full of shiny beads very bright, eye-catching. Lower body is made ​​of organza, fluffy feel. W..
£123.82 £101.00
Ex Tax: £101.00
Pastel pink color, the new color trends of this year,rhinestone sweetheart neckline, pleated bust,la..
£87.00
Ex Tax: £87.00
What is your first sight of this dress? Elegant, of course it is so elegant, and beautiful. High ill..
£92.00
Ex Tax: £92.00
Sparkly glitter always friends of party, and of course prom party.This gorgeous trumpet prom dress w..
£112.00
Ex Tax: £112.00
Sparkle illusion high neck with rhinestone neckline,trumpet skirt,keyhole back, you will be the quee..
£108.00
Ex Tax: £108.00
You will love this dress at your first eyes and your friends and family too, it is so sparkle and gl..
£102.00
Ex Tax: £102.00
White lace covered and mint color soft tulle gown bottom, button decorate back, this princess prom d..
£115.00 £104.00
Ex Tax: £104.00
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Deals Of The Day
Sexy Sparkly Plunging V-Neck Dark Grey Prom Dress with Slit KSP491
Embrace Modern Sophistication in Our Dark Grey Sparkly GownRedefine evening glamour with the KSP491...
Special price:£95.00
Old price:£120.00
You save:£25.00
Beautiful Sunset Long Ombre Cape Prom Dresses KSP421
The beautiful long prom dresses in color same as sunset in maxi dress style, with this ombre prom dr..
Special price:£118.15
Old price:£128.50
You save:£10.35
Black Crystal Embellished Halter A-Line Prom Dress KSP541
Step Into Elegance with Our Crystal Halter A-Line GownDiscover the perfect blend of modern sparkle a..
Special price:£119.00
Old price:£140.00
You save:£21.00
Floral Embellished Sheer Corset Prom Gown - Sweetheart A-line Champagne Gold Tulle Gown KSP655
Make a dazzling entrance at your next big event with our KSP655 floral embellished prom gown. This s..
Special price:£138.00
Old price:£150.00
You save:£12.00
Lilac Purple Applique Corset Mermaid Prom Dress KSP632
Define Your Curves in Our Lilac Applique Mermaid GownMake an unforgettable entrance with the KSP632...
Special price:£127.00
Old price:£138.00
You save:£11.00
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