Formal Dresses

2787 Products

Emmary
Emmary

Bustier Bodice Tulle Dress in Pale Blue

€33.00
€109.95
You save 70%

30% OFF AT CHECKOUT WITH CODE SALE30

4.8(44)
Emilee Midi Dress
Emilee Midi Dress

Side Cut Out Long Sleeve Plunge Dress in Pink Floral

€89.95
4.9(14)
April Midi Dress
April Midi Dress

Sweetheart Wide Pleated Dress in Cream

€29.00
€79.95
You save 64%
Kitsune Maxi Dress
Kitsune Maxi Dress

One Shoulder Cut Out Dress in Pink

€38.00
€99.95
You save 62%
4.8(21)
Nikki Maxi Dress
Nikki Maxi Dress

Halter Thigh Split Wrap Dress in Lilac

€21.00
€109.95
You save 81%
Charlita Maxi Dress
Charlita Maxi Dress

Strapless Cowl Back Satin Dress in Black

€79.95
4.8(96)
Charlita Maxi Dress
Charlita Maxi Dress
FURTHER 30% OFF

Strapless Cowl Back Satin Dress in Cherry Red

€42.00
€109.95
You save 62%
4.8(105)
Enya Maxi Dress
Enya Maxi Dress

One Shoulder Neck Tie Ruched High Split Dress in Black

€89.95
Evelyn Midi Dress
Evelyn Midi Dress

Long Sleeve Shirred Tulle Dress in Black Polka

€52.00
€99.95
You save 48%
4.8(13)
Genie Maxi Dress
Genie Maxi Dress

Off The Shoulder Dress in Chocolate

€79.95
4.9(154)
Clabelle Midi Dress
Clabelle Midi Dress

One Shoulder Ruffle Tulip Hem Dress in Emerald Blur Floral

€20.00
€89.95
You save 78%

30% OFF AT CHECKOUT WITH CODE SALE30

4.8(49)
Michaela Midi Dress
Michaela Midi Dress

Jacquard Ruffle Detail Tiered Dress in Light Blue

€109.95
4.8(28)
Bethanie Maxi Dress
Bethanie Maxi Dress

Off The Shoulder Mesh Dress in Red

€79.95
4.8(43)
Enid Midi Dress
Enid Midi Dress

Sweetheart Neck Ruched Bodycon Dress in Rose Blanca

€43.00
€89.95
You save 52%
Primrose Midi Dress
Primrose Midi Dress
25% OFF
FURTHER 30% OFF

Satin Strapless Draped Wrap Skirt Dress in Lilac

€17.00
€89.95
You save 81%

30% OFF AT CHECKOUT WITH CODE SALE30

Bethanie Maxi Dress
Bethanie Maxi Dress

Off The Shoulder Mesh Dress in Cream

€36.00
€109.95
You save 67%
4.8(65)
Isla Maxi Dress
Isla Maxi Dress

Satin One Shoulder Side Split Dress in Sage

€40.00
€109.95
You save 64%
4.9(21)
Amartina Midi Dress
Amartina Midi Dress

V Neck Twist Bodice Flutter Sleeve Dress in Forest Green

€29.00
€99.95
You save 71%
4.0(1)
Out Till Dawn Maxi Dress
Out Till Dawn Maxi Dress

Thigh Split Dress in Navy Sequin

€79.95
4.8(68)
Millie Midi Dress
Millie Midi Dress

Front Twist Cut Out Thigh Split Dress in Wine

€59.00
€79.95
You save 26%
4.9(10)
Delilah Maxi Dress
Delilah Maxi Dress

Sequin Strapless High Leg Split Fitted Dress in Gold

€56.00
€109.95
You save 49%
5.0(2)
Alexandra Maxi Dress
Alexandra Maxi Dress

Sequin Off Shoulder Leg Split Dress in Black

€77.00
€159.95
You save 52%
Rhaziya Midi Dress
Rhaziya Midi Dress

Sleeveless Straight Neck Fit and Flare Dress in Tobacco

€79.95
4.8(50)
Felicity Midi Dress
Felicity Midi Dress
25% OFF

Plunge Diamante Detail Dress in Black

€35.00
€79.95
You save 56%
4.7(3)
Ofeliya Midi Dress
Ofeliya Midi Dress

Lace Trim Satin Slip Dress in Cornflower Blue

€18.00
€79.95
You save 77%
5.0(1)
Courtney Midi Dress
Courtney Midi Dress

Corset Panel Low Back Dress in Black

€99.95
4.7(22)
Alexia Midi Dress
Alexia Midi Dress

One Shoulder Bust Slip Dress in Fuschia

€42.00
€89.95
You save 53%
Sylvana Maxi Dress
Sylvana Maxi Dress

Cowl Halter Neck Bodycon Dress in Chocolate

€109.95
5.0(14)
Annie Midi Dress
Annie Midi Dress

Wrap Front Ruffle Detail Dress in Orange Floral

€25.00
€79.95
You save 69%
Showing 1 - 30 of 2787 Products
Formal Dresses 

Where to buy a fancy formal dress online in UK?

The Formal Dresses edit for women online at Showpo is made for every formal event moment that calls for a little extra effort, the big nights, the milestone dinners, and every “wow, you look amazing” moment in between. Whether you’re heading to a black-tie wedding, an evening ball, your Year 10 or Year 12 formal, your graduation, or even just a fancy dinner that got a little more dressy than expected, these unique women's pieces bring polish without trying too hard.

What is the formal dress code? For a wedding? How to dress for a semi-formal event?

If drama’s your thing, you’ll fall for our maxi gowns, sweeping silhouettes, luxe satin, and chiffon that moves beautifully under the gala lights. Want that perfect in-between for a party? Semi-formal Midis strike the balance between timeless and modern, made for the girl who likes a little structure with her sparkle. And when it’s time to go all out for a wedding, reach for our elegant satin or sequin formal dresses, they catch the light (and attention) from every angle. You’ll find all kinds of cuts here: halternecks, off-the-shoulder moments, strapless styles, and those one-shoulder looks that show just the right bit of skin. The colours are just as good: soft champagne, blush pink tones, deep emerald green, and classic navy blue. They all hit different once the lights go down; our unique formal and semi-formal dresses are made for evenings out.

How to style a formal dress? How to accessorise a formal dress? What to wear over a formal dress when its cold?

Styling for an evening gala? Easy. Grab a pair of barely-there heels from our collection and a sparkly clutch or chic bag that fits the essentials: phone, lip, cards, done. Put on gold jewellery pieces if you want that warm glow; silver if you feel like looking sharper. For hair, it’s totally up to the vibe you’re going for. Soft waves give easy and romantic, and a slick bun is perfect when you’re into that clean, polished look. A touch of highlight on your cheekbones never hurts, and a red lip if you’re in the mood to go bold. Cold outside? No stress. Throw on a tailored blazer, faux fur coat or jacket, or an elegant shawl to stay warm without ruining the vibe. Structured outerwear keeps the look formal, elegant, polished, and event-ready, even when the temperature drops.

Is there free shipping in the UK? Does Showpo offer plus-size options?

Our UK girls get free shipping for carts over €150. See our shipping page for more information. Not sure about sizing? Our Size Guide is super easy to follow, and if it’s not quite right, our Returns Policy has your back, no stress. We also carry sizes 0-16, including plus sizes, so that all girls can find their perfect dress. Formal dresses don’t need to feel stiff; it’s whatever makes you feel good. You should feel like yourself, just dialled up a bit. Pick the clothes or dress you can’t stop thinking about, throw on your heels, and have a gorgeous night.