4.7 / 5 out of 7000+

Cosima – Velvet Blazer Maxi Dress

Regular price Sale price£44.95 GBP Save 50% £90.00 GBP
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Ships by Sun 5 Jul
United Kingdom

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Evenings out can feel dull when your outfit doesn’t make a statement!

Step into Cosima and feel the instant confidence of wearing a dress that moves with you, drapes beautifully, and turns every glance into admiration. Now stop imagining this can be your signature look at any special event.

Luxurious velvet feel

The high-quality velvet of Cosima feels sumptuous against your skin, offering a soft, rich texture that elevates your entire presence. From the moment you slip it on, the dress exudes sophistication, making you feel effortlessly elegant.

Flattering silhouette

Cosima long, tailored shape skims your curves while the structured shoulders add poise and confidence. Every line and seam is designed to enhance your figure without restricting movement, giving you a commanding yet feminine stance.

Statement double-button design

The vintage-inspired double buttons draw the eye and add a touch of classic charm to a modern silhouette. They’re not just decorative they accentuate the neckline and provide a subtle focus that elevates the whole outfit.

Effortless elegance

Whether you’re attending a formal dinner, gala, or evening out, Cosima provides a refined, timeless look that blends boldness with sophistication. Its flowing maxi length moves beautifully with every step, making you feel poised and graceful.

Versatile styling options

Pair with metallic heels and statement jewellery for a striking evening look, or suede ankle boots and a coordinating bag for a chic, modern twist on vintage style. Cosima adapts to your vision, making it the ultimate dress for memorable nights.

Step into Cosima and transform any evening into an occasion to remember. With its luxurious velvet, structured elegance, and eye-catching details, it’s more than a dressit’s your statement of confidence and style.

All our UK orders are shipped via Royal Mail and include Track & Trace, so you can easily follow your shipment.

We offer free shipping on all orders, ensuring your package arrives at no extra cost.


At Arthur & Margaret London, we offer a 30-day money-back guarantee
for a worry-free shopping experience. If you are not completely
satisfied with your purchase, you can return it.


At Arthur & Margaret London, customer satisfaction is our priority.
Our customer service team is always here to help and ready to assist you
with any questions or concerns.

Edith P. and 7.0k+ other women love Arthur & Margaret London

Loved by women across the UK

★★★★★

Just received my order from Arthur & Margaret London and I'm so pleased! The dress is even more beautiful in person, with lovely quality and a perfect fit. It arrived quickly and was beautifully packaged. I can't wait to wear it and will definitely be ordering again.

Amelia T.
London – 12 hours ago
★★★★

Really happy with my purchase

from Arthur & Margaret London 🤍 Beautiful quality, lovely details, and such an easy shopping experience. Definitely coming back!

Charlotte B.
Manchester – 1 day ago
★★★★

So happy with this dress 🤍

Comfortable, flattering and exactly the effortless style I was looking for. Love how easy it is to wear — definitely a new favourite.

Hannah C.
Birmingham – 2 days ago
★★★★★

Very happy with my purchase from Arthur & Margaret London. The quality is excellent, the fit is perfect, and everything feels beautifully made. The whole experience, from ordering to delivery, was smooth and professional. I’ll definitely be shopping here again.

Eleanor P.
Leeds – 3 days ago
★★★★★

This dress is exactly what I was looking for. It's flattering, comfortable, and so easy to wear. The quality is lovely, and I felt great in it from the moment I put it on. I've already had compliments and will definitely be ordering from Arthur & Margaret London again.

Jessica T.
Liverpool – 5 days ago

Summer Sale

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Thank you for your continued support – it truly means a lot to us

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Why Women Choose Us

At Arthur & Margaret London, we believe fashion should be elegant, comfortable, and effortless. That's why we carefully create timeless pieces designed to make women feel confident every day.

Whether you're a loyal customer or discovering our brand for the first time, we invite you to explore our collection and experience the quality, craftsmanship, and attention to detail that define every piece.

Thank you for being part of our journey.

30-DAY MONEY-BACK GUARANTEE

We offer a 30-day return period. Feel free to return any item within 30 days if you are not completely satisfied.

FREE DELIVERY

We offer free shipping incl. Track & Trace to the United Kingdom!

SECURE PAYMENT

Your payment information is processed securely. We accept Apple Pay, Google Pay, Mastercard, Shop Pay, and Visa.

FAQs

Once your order is confirmed, you will receive an email with your order number. To track your order!

You can return items within 30 calendar days of receiving them.

  • Return shipping costs are the buyer’s responsibility.
  • Approved refunds will be issued to your original payment method.

If you experience any issues or have questions, visit our Contact Page to connect with our support team. We’re here to assist you promptly!