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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Step into Your Own Fairytale in Our Pink Off-Shoulder Ball GownRadiate princess vibes with a modern ..
£115.00
Ex Tax: £115.00
Command the Spotlight in Our Red Lace Mermaid GownRedefine glamour with the KSP502. This red lace me..
£130.00 £122.00
Ex Tax: £122.00
Captivate the Crowd in Our Rose Pink Halter Lace GownExude effortless romance and high-end elegance ..
£130.00 £103.00
Ex Tax: £103.00
Flowing Elegance Meets High-Octane SparkleStep into the night with the KSP400. This royal blue chiff..
£119.00
Ex Tax: £119.00
Define Sophistication in Our Royal Blue Satin Criss-Cross GownEmbrace the power of minimalist luxury..
£130.00 £99.00
Ex Tax: £99.00
Embrace Classic Modesty in Our Sage Green Cap-Sleeve GownDiscover the beauty of understated elegance..
£95.00 £91.00
Ex Tax: £91.00
Where Shimmer Meets Flora: The Ultimate Statement GownStep into the spotlight with the KSP540. This ..
£130.00 £119.00
Ex Tax: £119.00
Own the Red Carpet with Seamless SophisticationEmbrace the power of simplicity with the KSP542. This..
£92.00
Ex Tax: £92.00
Steal the Spotlight in Our Ultimate Sparkly Mermaid GownCelebrate your big night with the KSP537. Th..
£165.00 £140.00
Ex Tax: £140.00
Master the Art of Understated GlamourRedefine evening luxury with the KSP599. This neutral-toned lon..
£180.00 £170.00
Ex Tax: £170.00
Captivate Every Eye in Our Royal Blue Sheer Lace MasterpieceEmbrace modern glamour with the KSP588. ..
£110.00
Ex Tax: £110.00
Create a moment of pure romance with our Dark Blue Lace Bridesmaid Dress. This elegant floor-length ..
£92.00 £88.00
Ex Tax: £88.00
Define elegance with our Dark Grey Long Lace Bridesmaid Dress. This sophisticated floor-length gown ..
£97.00
Ex Tax: £97.00
Elevate your bridal party with the sculptural elegance of our Navy Blue One-Shoulder Bridesmaid Dres..
£92.00 £87.00
Ex Tax: £87.00
Command attention in our Royal Blue Long Bridesmaid Dress. This floor-length masterpiece features a ..
£92.00
Ex Tax: £92.00
Classic Red Carpet Glamour in Structured PleatsEmbrace a look of pure sophistication with the KSP227..
£86.00
Ex Tax: £86.00
Embrace Gothic Glamour in Our Black Lace Applique GownRedefine evening elegance with the KSP444. Thi..
£99.00
Ex Tax: £99.00
Master the Art of the Entrance (and Exit) in Our Black Mermaid GownRedefine evening sophistication w..
£117.00
Ex Tax: £117.00
Bask in Elegance with Our Butter Yellow Satin GownRadiate warmth and modern sophistication with the ..
£98.00
Ex Tax: £98.00
Command Attention in a Sea of Red and Silk-Like FlowMake a statement that no one will forget with th..
£92.00 £89.00
Ex Tax: £89.00
Embrace Nature’s Elegance in Scupltured Green LaceStep into your special night with the KSP577, a dr..
£99.00
Ex Tax: £99.00
The illusion lace one shoulder neck decorated with sequin and beading, and also sequined sheer back...
£90.00
Ex Tax: £90.00
Plunging v-neckline connect with defined waist for all body shape; convertible straps, more adjustab..
£120.00 £97.00
Ex Tax: £97.00
This princess prom gowns is simple yet chic, with a longer necklace in front or back, you will be th..
£90.00
Ex Tax: £90.00
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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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