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:
Embellished top with halter neckline, sequin decorated waistline and open back, aline silhouette, th..
£98.00
Ex Tax: £98.00
Step Into the Spotlight in Our Pastel Purple Applique GownCelebrate your milestones in style with th..
£89.00
Ex Tax: £89.00
Master Modern Elegance in Our Peacock Illusion GownRedefine your formal style with the KSP178. This ..
£87.00 £82.00
Ex Tax: £82.00
The Ultimate Romantic Choice: Pink Lace Long Bridesmaid DressCreate unforgettable wedding memories w..
£94.00 £92.00
Ex Tax: £92.00
Celebrate in Style with Our Empire Waist Pink One-Shoulder GownRedefine elegance with the KSP325. Th..
£106.47 £85.00
Ex Tax: £85.00
This open back floor length evening dress features plenty of crystal rhinestone, red beadings and se..
£110.00 £97.00
Ex Tax: £97.00
Steal the Spotlight in Our Dramatic Red Layered Trumpet GownUnleash your inner superstar with the KS..
£97.00 £87.00
Ex Tax: £87.00
Step Into Timeless Elegance with Our Pink Retro Satin GownEmbrace the golden age of glamour with the..
£93.00 £85.00
Ex Tax: £85.00
Master the Art of Understated Luxury in Our Peacock GownRedefine your formal wardrobe with the KSP17..
£96.00 £89.00
Ex Tax: £89.00
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
Exude Regal Confidence in Our Royal Blue One-Shoulder GownElevate your party wardrobe with the KSP30..
£83.00
Ex Tax: £83.00
You will be sure to carch eyes at homecoming in this ultra-chic dress!.Thousand of colorful beads sh..
£108.61 £98.00
Ex Tax: £98.00
Exquisite criss-cross pleated on the bust, shining diamond belt divide the top and skirt,lace up bac..
£85.00
Ex Tax: £85.00
Aline is the best silhouette for everybody shape, coral pink is the better color choice for fair ski..
£87.00
Ex Tax: £87.00
Red prom dress, representing passionate. Tailoring is very unique. This section is the shoulder dres..
£115.13 £99.00
Ex Tax: £99.00
This cute retro LBD looks like the early Dior classic style. Your neck and collarbone will look gorg..
£88.00
Ex Tax: £88.00
This vintage style LBD for both girls and woman. The single shoulder decorated with big bowknot, nif..
£92.00
Ex Tax: £92.00
Blue and white color are all quiet color, they two together emphasis your elegance,tunic waistline,f..
£91.00
Ex Tax: £91.00
Step Into Elegance with Our Radiant Black Satin GownElevate your bridal party with the KSP342. This ..
£76.00
Ex Tax: £76.00
Embrace Iconic Elegance in Our White & Black Strapless GownStep into a world of timeless sophist..
£94.00 £80.00
Ex Tax: £80.00
This red graduation dress with lace up top and ball gown silhouette, you will look very pretty and c..
£84.00
Ex Tax: £84.00
Revisit Mid-Century Glamour with Our Iconic Shelf Bust LBDElevate your style with the KSP376, a dres..
£85.00
Ex Tax: £85.00
The inspiration of two colors combination showed very good at this pretty dress, it is so cute and b..
£94.00 £88.00
Ex Tax: £88.00
Black chiffon sweetheart upper, teal soft tulle bottom gowns, contrast color,contrast material, fash..
£108.61 £99.00
Ex Tax: £99.00
Showing 169 to 192 of 511 (22 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
Happyprom © 2026