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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Dark blue long princess prom dresses, upper body is gothic prom corset design, retro style. It is un..
£130.34 £118.00
Ex Tax: £118.00
A look and feel that your bridesmaids must will love, this amazing strapless long and flowy chiffon ..
£89.06 £86.00
Ex Tax: £86.00
Spaghetti straps, sheer plunging v-neck, bodycon shape skirt flares into fishtail, so charming and s..
£107.00
Ex Tax: £107.00
This gorgeous dress is for your prom. Beaded like a heart, it stands for your youth and energy. Not ..
£141.20 £112.00
Ex Tax: £112.00
This hot pink long chiffon dress has a beaded bust at the empire. The beads across the busts, so ele..
£102.10 £85.00
Ex Tax: £85.00
This purple prom dress is made of chiffon but layered with tulle outside.That make whole dress shinn..
£108.61 £91.00
Ex Tax: £91.00
If you want to dance, wearing this romantic princess style dress, you will definitely be the audienc..
£130.34 £99.00
Ex Tax: £99.00
Department of collision black and white color, is a timeless choice for ever. No matter evening, for..
£108.61 £103.00
Ex Tax: £103.00
This is a strapless prom gown with a simple yet flattering style in soft-glaring satin available in ..
£93.41 £80.00
Ex Tax: £80.00
A soft and romantic one shoulder gown that features a ruched bodice with beaded embroidery on should..
£110.61 £99.00
Ex Tax: £99.00
One Shoulder prom dress, shoulder-shaped decorated with flowers, vibrant, unique dazzling. Waist wit..
£89.06 £80.00
Ex Tax: £80.00
This long one shoulder prom dress in red has so many wonderful details. It will have you feeling lik..
£102.10 £93.00
Ex Tax: £93.00
Sleeveless long formal dress features a low V-neckline featuring floral accent on the shoulder and t..
£97.75 £88.00
Ex Tax: £88.00
Plunging neckline can length face,so it is perfect for short neck.And if you occasionaly have a full..
£113.00 £103.00
Ex Tax: £103.00
Tidy and optional fold, in the waist slowly release your appeal, and natural sense, it is the import..
£108.61 £89.00
Ex Tax: £89.00
Dense pleats, delicate pearls, let the simple dress become a dazzling light.X-shaped cross the back,..
£108.61 £89.00
Ex Tax: £89.00
This purple dress is very noble.The tight waist and draping skirt suit well.Irregular folds waist ad..
£108.61 £99.00
Ex Tax: £99.00
The purple prom dress, simple and elegant, totally together, no frills. Beaded waist line, is the hi..
£108.61 £91.00
Ex Tax: £91.00
The whole bridesmaid dress is made ​​of satin. Very texture, elegant. The unique texture of satin he..
£89.06
Ex Tax: £89.06
Featuring a sexy V-neck, beaded empire waistline, Cloak Sleeves and floor length, this alluring prom..
£115.13 £103.00
Ex Tax: £103.00
This stunning formal gown has a classic design that is timeless. The strapless surplice bodice is sl..
£93.41 £83.00
Ex Tax: £83.00
It's a long chiffon dress, which you can wear in your concert,formal party, evening party, also it i..
£108.61 £87.00
Ex Tax: £87.00
A simple strapless sweetheart chiffon gown with gorgeous ruching detail to the bodice teamed with a ..
£93.41 £85.00
Ex Tax: £85.00
The one shoulder sequined evening dress let your enchanting become high-end luxury, make sure your o..
£108.61 £98.00
Ex Tax: £98.00
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Sexy Sparkly Plunging V-Neck Dark Grey Prom Dress with Slit KSP491
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Beautiful Sunset Long Ombre Cape Prom Dresses KSP421
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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..
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Floral Embellished Sheer Corset Prom Gown - Sweetheart A-line Champagne Gold Tulle Gown KSP655
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Lilac Purple Applique Corset Mermaid Prom Dress KSP632
Define Your Curves in Our Lilac Applique Mermaid GownMake an unforgettable entrance with the KSP632...
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