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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Radiate Timeless Elegance in Our Silver Grey Lace GownEmbrace your moment in the spotlight with the ..
£119.30
Ex Tax: £102.00
Step Into the Future of Elegance in Our Metallic Silver GownCommand the room with the KSP605. This s..
£150.00
Ex Tax: £150.00
Fashion 2PCS style ball gown, show beautiful waist; crystal decorated top and waistline, sparkle and..
£110.00
Ex Tax: £110.00
Sequin and beadings decorated neckline, waistline and waist cross to the back. Amazing point of this..
£109.00
Ex Tax: £109.00
This mermaid style formal evening dress is elegant and subtle yet sexy way to show some skin. Fully ..
£95.00
Ex Tax: £95.00
A-line tulle sleeveless prom dress with illusion jeweled neckline. V-neck shape back with lace up, m..
£130.00 £115.00
Ex Tax: £115.00
You will be the spotlight of the whole party with this shine fitted dress,see through details, under..
£160.00
Ex Tax: £160.00
Fashion and retro style ,fitted corset with lace up back, flare skirts in red color, so beautiful. R..
£101.00 £95.00
Ex Tax: £95.00
This dress is so sparkle, you brighten on the party, you will be the spotlight of the prom.Flowing a..
£100.00
Ex Tax: £100.00
This champagne color princess ball gown dress for prom party features romantic sweetheart neckline c..
£115.00
Ex Tax: £115.00
The first sight of this prom gown is the special turn-down neckline, cross at the middle front, fit ..
£110.00 £92.00
Ex Tax: £92.00
Exude timeless sophistication in our Dark Green Halter Bridesmaid Dress. This elegant sheath-silhoue..
£102.00
Ex Tax: £102.00
Asymmetric bustier top decorated with colorful flowers, like an elf in the garden.Bulit-In Bra, Bone..
£97.50
Ex Tax: £97.50
Pattern embellished with applique, beading, high illusion neckline and see through back, bodice top,..
£130.00 £120.00
Ex Tax: £120.00
Define elegance in our Blue Lace Mermaid Bridesmaid Dress. This breathtaking form-fitting gown featu..
£120.00 £92.00
Ex Tax: £92.00
Make a bold statement with our Emerald Green Mermaid Bridesmaid Dress. This striking floor-length go..
£102.00
Ex Tax: £102.00
V-neck, open back with high cinched waist, you will look more slimmer. With lining, built-in bra and..
£90.00
Ex Tax: £90.00
Sparkle sequin top with sheer plunging v-neck and open back,floor length skirt features embroidery a..
£130.00 £119.00
Ex Tax: £119.00
Plunge illusion V-neckline, V-shape back, side thigh slit, body con silhouette, empire waist, perfec..
£110.00
Ex Tax: £110.00
Master Modern Sophistication in Our Navy Blue Off-Shoulder GownDiscover the perfect balance of grace..
£119.30 £113.55
Ex Tax: £97.00
Special off-the-shoulder neckline in shape of turn-down collar, high thigh slit, cover fat arm, show..
£110.00
Ex Tax: £110.00
Button skirt is the trends of this year and next year, this red dress in mermaid silhouette with but..
£130.00 £112.00
Ex Tax: £112.00
Captivate the Crowd in Our Rose Pink Halter Lace GownExude effortless romance and high-end elegance ..
£130.00 £103.00
Ex Tax: £103.00
Distinct silhouette prom dress with spaghetti straps criss-cross at back, cinched waist and sheer de..
£130.00 £97.00
Ex Tax: £97.00
Showing 97 to 120 of 402 (17 Pages)
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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