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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Sequin illusion bateau neckline, cut out back, pleated bust, this dress is so gorgeous for junior an..
£94.00
Ex Tax: £94.00
Prety ruching around waistline and bust inspired by Grecian,this full length dress perfect for almos..
£92.00 £86.00
Ex Tax: £86.00
Bright color orange and yellow, this dress is the spark of these two color collide.With flowers on t..
£102.00 £92.00
Ex Tax: £92.00
The point of this long dress is the beautiful see through floral lace back.If you have confidence ab..
£93.00
Ex Tax: £93.00
The elegance color navy blue plus Chinese style embroidery,flowing skirt,exquisite shape of embroide..
£133.00 £125.00
Ex Tax: £125.00
Flowing chiffon in high low length between in and out, high side slit on the out layer, to create li..
£87.00
Ex Tax: £87.00
This gorgeous bridesmaid dress takes the plunge with draped deep v-neckline and fitted bodice for a ..
£96.00 £86.00
Ex Tax: £86.00
This long chiffon bridesmaid dresses features pleated big V shape neckline, and extend to both shoul..
£92.00 £87.00
Ex Tax: £87.00
This semi-formal prom dresses is fashion style according prom dresses trends this year. Straight nec..
£97.00 £87.00
Ex Tax: £87.00
Mint green chiffon prom dress, elegant and refined. The most attractive is the braided neck strap. W..
£93.41 £84.00
Ex Tax: £84.00
Embrace Goddess Glamour in Our Mint Green Pleated GownExude timeless grace and fresh modern style wi..
£88.00
Ex Tax: £88.00
Make a Red-Carpet Entrance in Our Strapless Pleated GownElevate your evening presence with the KSP33..
£92.00 £88.00
Ex Tax: £88.00
This style bridesmaid dresses have the classic strapless,flowy flattering figure, you will look like..
£92.00 £86.00
Ex Tax: £86.00
Halter top features pattern pleates, high illusion back with keyhole cut, slim waist design, full le..
£91.00
Ex Tax: £91.00
Embellished top with halter neckline, sequin decorated waistline and open back, aline silhouette, th..
£98.00
Ex Tax: £98.00
This wedding bridesmaid dress is simple but elegant. Criss-cross pleated top bodice with thin straps..
£94.00 £92.00
Ex Tax: £92.00
Sparkle jeweled swirl top, cinched waistline, flare skirt, in the red color, gorgeous and beautiful...
£110.00
Ex Tax: £110.00
This open back floor length evening dress features plenty of crystal rhinestone, red beadings and se..
£110.00 £97.00
Ex Tax: £97.00
Crosses pleated at the bust area to plump up your chest. With the help of lace round neckline expose..
£115.00 £99.00
Ex Tax: £99.00
This wedding bridesmaid dress is simple but elegant. Criss-cross pleated top bodice with thin straps..
£92.00 £87.00
Ex Tax: £87.00
Sexy see through tops with floral lace covered, mermaid silhouette, this dress is prepared to show o..
£102.00
Ex Tax: £102.00
Aline is the best silhouette for everybody shape, coral pink is the better color choice for fair ski..
£87.00
Ex Tax: £87.00
A fairy tale gowns with sequin top, lace up back, a dreamy princess ball gown.It is perfect for pear..
£136.00 £124.00
Ex Tax: £124.00
Silhouette: GownsNeckline: SweetheartHemline/Train: Long/ Full LengthFabric: Tul..
£102.00
Ex Tax: £102.00
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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
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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
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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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