1004 Products

Emma Midi Dress
Emma Midi Dress

Lace Cap Sleeve Bodycon Dress in Black

£89.95
4.9(32)
Kailani Maxi Dress
Kailani Maxi Dress

Off Shoulder Plunge Draped Skirt Dress in Black

£109.95
5.0(1)
Judee Midi Dress
Judee Midi Dress

One Shoulder High Side Split Dress in Wine

£69.95
4.8(50)
Rania Maxi Dress
Rania Maxi Dress

Contrast Lace Bodice Bias Cowl Drop Waist Dress in Chocolate

£79.95
4.9(108)
Raya Maxi Dress
Raya Maxi Dress
22% OFF

Deep V Neck Low Back Bodycon Dress in Black

£79.95

22% OFF AT CHECKOUT WITH CODE SINGLES22

4.9(15)
Loretta Maxi Dress
Loretta Maxi Dress

Contrast Halter Neck Pleated Dress in Black

£109.95
4.8(6)
Criselda Maxi Dress
Criselda Maxi Dress
22% OFF

One Shoulder Maxi Dress in Chocolate

£62.00
£89.95
You save 31%

22% OFF AT CHECKOUT WITH CODE SINGLES22

4.9(85)
Collette Midi Dress
Collette Midi Dress
22% OFF

Ruched Bust Wide Strap Detail Lace Midi Dress in Black

£89.95

22% OFF AT CHECKOUT WITH CODE SINGLES22

4.9(48)
Avery Midi Dress
Avery Midi Dress

Strapless Draped Side Split Dress in Pink

£89.95
4.9(134)
Andrea Midi Dress
Andrea Midi Dress
22% OFF

Strapless Ruffle Dress in Black

£69.95

22% OFF AT CHECKOUT WITH CODE SINGLES22

5.0(18)
Visenta Midi Dress
Visenta Midi Dress

Asymmetrical Sleeve Dress in Pink

£109.95
4.8(35)
Criselda Maxi Dress
Criselda Maxi Dress

One Shoulder Maxi Dress in Orange

£89.95
4.9(85)
Dixie Maxi Dress
Dixie Maxi Dress
22% OFF

Plunge Halter Low Back Dress in Wine

£89.95

22% OFF AT CHECKOUT WITH CODE SINGLES22

5.0(9)
Marcel Maxi Dress
Marcel Maxi Dress

Off Shoulder Corset High Split Dress in Black

£109.95
4.9(77)
Joanne Maxi Dress
Joanne Maxi Dress

Scoop Neck Fringe Dress in Chocolate

£109.95
4.9(10)
Francis Maxi Dress
Francis Maxi Dress

Halter Ruched Backless Dress in Dark Chocolate

£89.95
4.8(21)
Laurie Maxi Dress
Laurie Maxi Dress

One Shoulder Ruched Dress in Chocolate

£89.95
4.8(5)
Alanna Maxi Dress
Alanna Maxi Dress
22% OFF

Off Shoulder Ruched Mesh Dress in Chocolate

£89.95

22% OFF AT CHECKOUT WITH CODE SINGLES22

4.8(37)
Amara Maxi Dress
Amara Maxi Dress

Corset Bodice Lace Up Dress in Blue

£89.95
4.5(4)
Marcel Maxi Dress
Marcel Maxi Dress

Off Shoulder Corset High Split Dress in Sage

£109.95
4.9(77)
Visenta Midi Dress
Visenta Midi Dress

Asymmetrical Sleeve Dress in Black

£109.95
4.8(35)
Caterina Maxi
Caterina Maxi
22% OFF

Ruched Off Shoulder Mesh Dress in Wine

£79.95

22% OFF AT CHECKOUT WITH CODE SINGLES22

5.0(28)
Larson Maxi Dress
Larson Maxi Dress

Asymmetric Tie Neck Column Dress in Chocolate

£89.95
4.8(28)
Marcel Maxi Dress
Marcel Maxi Dress

Off Shoulder Corset High Split Dress in Wine

£109.95
4.9(77)
Kailani Maxi Dress
Kailani Maxi Dress

Strapless Corset Bodice Lace Up Back Dress in Chocolate

£109.95
4.8(6)
Salome Midi Dress
Salome Midi Dress

Halter Neck Column Dress in Wine

£89.95
4.9(112)
Sienna Maxi Dress
Sienna Maxi Dress

3D Floral Strapless Column Dress in Black

£159.95
4.8(28)
Bethanie Maxi Dress
Bethanie Maxi Dress
22% OFF

Off The Shoulder Mesh Dress in Chocolate

£89.95

22% OFF AT CHECKOUT WITH CODE SINGLES22

4.8(75)
Thelma Maxi Dress
Thelma Maxi Dress

Square Neck Bodycon Dress in Wine

£89.95
4.9(39)
Nicolette Maxi Dress
Nicolette Maxi Dress

Cape Sleeve Off Shoulder Dress in Chocolate

£99.95
4.9(55)
Showing 1 - 30 of 1004 Products
Formal Dresses

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 prom, 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.

How to style and layer a formal dress?

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. 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.

What formal and semi-formal dress styles are available at Showpo?

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 a wedding invitation calls for formal attire, 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. Short sleeves offer some upper-arm coverage, while sleeveless cuts give an open shoulder line. Choose by comfort, freedom of movement, your planned layers and the invitation. Sleeve length alone doesn’t establish formality; the fabric, silhouette and overall finish help determine how dressy a style feels. 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. Follow the invitation: formal events call for dressier fabrics and finishes, while semi-formal plans allow more relaxed silhouettes. For black tie, a floor-length gown is the safest starting point.

Frequently Asked Questions

Can I wear a midi dress to a formal event?

Check the invitation first. A midi in a dressier fabric with an elegant finish can suit some formal events. For black tie, follow the host’s guidance rather than assuming every midi works.

Can I wear a sleeveless dress to a formal wedding?

Follow the couple’s dress code and venue guidance. If the ceremony asks for covered shoulders, bring a shawl or suitable jacket that works with your dress.

How do I choose a formal dress for prom?

Start with your prom’s dress code, then choose your preferred silhouette. Check that you can sit, walk and dance comfortably before settling on your dress.

Does Showpo offer free delivery in the UK? Are there plus sizes available?

Big night coming up? Showpo offers free standard shipping on UK orders of £100 or more. Our formal dress collection comes in curve and plus size options as well, along with a range of sizes 4–20. Check our size guide to help find your perfect fit, and read our returns policy before ordering. Find your favourite dress and get ready for a gorgeous night.