Prom Dresses Under £100: Affordable Luxury

Get the look you love for less with our collection of prom dresses under £100. At HappyProm, we believe every student deserves to shine, regardless of their budget. Our affordable prom gowns feature the same high-quality craftsmanship as our premium lines, including free custom-made service to ensure your dress fits perfectly without the added cost of alterations.

▼ Smart Shopping: How to Find the Best Prom Dress for Under £100

High-Quality, Cheap Prom Dresses in the UK

Searching for cheap prom dresses in the UK doesn't mean you have to compromise on style or quality. Our **under £100 collection** is carefully curated to offer the latest 2026 trends—from shimmering sequins to elegant chiffon—at prices that won't break the bank. Whether you are looking for a short party dress or a floor-length evening gown, HappyProm provides luxury aesthetics at a fraction of the boutique price.

Save More with Free Custom Tailoring

The biggest hidden cost of buying a prom dress is often the alterations. At HappyProm, even our budget prom dresses come with our signature free custom-made service. By providing your exact measurements, you receive a gown that is ready to wear the moment it arrives. This "fit like a glove" promise saves you an average of £30–£60 on local tailoring, making our prom dresses under £100 the best value choice for UK students.

Reliable Service & Fast UK Shipping

HappyProm is a trusted prom store dedicated to making fashion accessible. We use premium fabrics that look and feel expensive, ensuring you feel confident on your big night. With fast delivery and a secure shopping experience, finding an affordable prom dress has never been easier. Explore our range today and discover why thousands of Year 11 and Year 13 students trust HappyProm for their milestone events.

Show:
Sort By:
A beading neck ties on the dress, special design, draped chest emphasizes the bust area, perfect for..
£115.00 £93.00
Ex Tax: £93.00
The details of this dress are all fashion, side straps across shoulders crossed at the back,side cut..
£105.00 £89.00
Ex Tax: £89.00
Fantastic and girly, this shinning taffeta homecoming dress is the perfect choice for your special d..
£102.10 £81.00
Ex Tax: £81.00
This coral long prom dresses uk is slim,cute and sexy, deep v-neck,cut out waist,sequined straps app..
£97.00
Ex Tax: £97.00
Bored with pure color prom dress and want a special one, this print dress will be you good choice. S..
£107.00 £92.00
Ex Tax: £92.00
This dress is very Sophisticated,pleated drapes with embroidery,decorated the embroidery with sequin..
£112.00 £99.00
Ex Tax: £99.00
Classic strapless prom dresses style. The point of this dress is the top,sequin sweetheart chest are..
£103.00 £91.00
Ex Tax: £91.00
Soft pink prom dress, v-neckline, front and symmetry. In addition to the beautiful waist beads, more..
£108.61 £99.00
Ex Tax: £99.00
The whole dress without beading decoration, but stacked chest fold design, which is very unique to t..
£89.06 £80.00
Ex Tax: £80.00
This flowing prom dress is so elegant and pretty temperament.You will look like Greek Goddess in the..
£98.00
Ex Tax: £98.00
This special designed prom dress is made of taffeta and Georgette. Sheath style on the top bodice an..
£99.00 £90.00
Ex Tax: £90.00
Special design oblique wrapped upper bodice extend to shoulder,sequined waistline, you are the godde..
£107.00 £95.00
Ex Tax: £95.00
A flower decorated one shoulder,a prominent waistline and a train in a line style, this dress is cla..
£103.00 £88.00
Ex Tax: £88.00
Strapless top, flounced skirt bottom,with a big floral at the bottom, this dress can improve your fi..
£110.00 £99.00
Ex Tax: £99.00
This fresh pink prom dress design is simple, but very classic.You can custom the color and size free..
£97.75 £89.00
Ex Tax: £89.00
This cute prom dress is mainly made ​​of soft white tulle.Waist design is the color contrasting fabr..
£89.86 £78.00
Ex Tax: £78.00
This red floor-length chiffon dress is flowing as the wind. You can custom the colors and size. The ..
£104.27 £87.00
Ex Tax: £87.00
Sideline draped,sheath style and spaghetti strap, everything is designed together to show off your p..
£97.00 £84.00
Ex Tax: £84.00
The hand sew sequin and beading accented the sweetheart neckline in the floral pattern as same as th..
£108.00
Ex Tax: £108.00
Romantic violet prom dress, especially for this season. Elegant chiffon fabrics, coupled with chest ..
£108.61 £92.00
Ex Tax: £92.00
This cute little white dress with ruched sequin waistline and layer skirt, suitable for prom season,..
£86.00
Ex Tax: £86.00
Hemline blast away from the waist,three layer at the skirt.Flower at the chest area make this dress ..
£93.00
Ex Tax: £93.00
Bright blue tulle layered outside,a highlight waist,print leopard with flower decorated one shoulder..
£105.00 £93.00
Ex Tax: £93.00
Sequin and Jeweled sew full of the dress, backless in mini length, this party dress is glitter and b..
£85.00
Ex Tax: £85.00
Showing 385 to 408 of 516 (22 Pages)
Deals Of The Day
Sexy Sparkly Plunging V-neck Formal Prom Dresses Slit KSP491
Deep V shape front and back show off sexy back, side slit elongate your beautiful leg,the sparkly se..
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
Embellished Crystal Long Black Halter Straps Prom Dresses KSP541
Tons of rhinestone in various size decorated top, patterned wave shape waistline in sheer vision, jo..
Special price:£110.00
Old price:£140.00
You save:£30.00
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 Dresses String Back KSP632
This romantic purple tone fit and flare dresses for senior girls to their prom party. It features ro..
Special price:£127.00
Old price:£138.00
You save:£11.00
Happyprom © 2026