Maxi Dress with Square Neck and Long Sleeves for Women

£91.95 £54.95 Save 40%
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More than 50,000 satisfied customers

2 items | 10% OFF, 3 items | 15% OFF

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SUMMER SALE UP TO 70% OFF!

If you can add it to bag, it's still in stock. Extra savings apply automatically at checkout — stack & save while you can.

Buy 2 pieces → Extra 10% off

Buy 3 pieces → Extra 15% off

Buy 4 pieces → Extra 20% off

This square neck long sleeve maxi dress offers a romantic, flowing silhouette that works well for casual outings or dressed-up occasions. The sweetheart neckline sits close to your shoulders, while full-length sleeves with gathered cuffs add softness and movement. The dress falls straight from a cinched waist to the floor, creating an effortless, relaxed fit. Pair it with flat sandals for daytime wear or heeled sandals to dress it up in the evening.

Key Features

  • Square Neckline: A sweetheart-style square neck that sits well on different body types and looks lovely layered with delicate jewellery
  • Puffed Long Sleeves: Full-length sleeves with gathered fabric at the cuffs that add a feminine touch and work well across seasons
  • Flowing Maxi Length: The dress skims your body and falls to the floor, giving you room to move and creating an elegant, elongated look
  • Garden Party to Evening: Ideal for brunches, outdoor celebrations, wedding guests, or relaxed evening events where you want to look put-together without being formal

We offer a 100% money-back guarantee within 30 days of receiving your order. If you're not completely satisfied, simply return your item for a full refund—no questions asked.

At Sienna London, customer satisfaction comes first. That's why we keep you constantly updated on your order and always offer free shipping with a track & trace code.

Our customer service is available 24/7 to answer all your questions and comments. Whether you need advice on a product or help with an order, we are here to support you.

Don’t hesitate to contact us, we’re happy to help!

Please contact us
at support@sienna-london.com

More than 50,000 customers trust Sienna London, with an average rating of 4.8 out of 5 stars. Your satisfaction and confidence mean everything to us.

This Season Shop More, Save More.

For one day only, Sienna Circle members receive exclusive access to our biggest sale of the season.

Our most-loved styles are now available with up to 70% OFF — but only for a limited time.

Whether you're treating yourself, your daughter, your sister, or someone special, today is the perfect opportunity to save on the pieces everyone has been talking about.

Buy 2 items → Get an extra 10% OFF
Buy 3 items → Get an extra 15% OFF
Buy 4 items → Get an extra 20% OFF

These bundles are end-of-season-exclusive and live for today only once this offer ends, it won't return. And as always with Sienna… when a style sells out, it's gone for good.

Stock is limited. Today is the day.

COMBINE & SAVE EXTRA 10%

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Here's what our customers say

Excellent 4.8 / 5 ★★★★★
★★★★★

Perfect Fit & Luxurious Comfort

The fit is absolutely perfect, and the fabric feels incredibly soft against the skin. You can really tell it’s made with attention to detail and comfortable yet stylish. I’ve already received compliments, and I couldn’t be happier with my purchase!

Ashley Thompson
3 days ago
★★★★★

Worth Every Penny

I was hesitant to spend $200 on a dress from a boutique I hadn’t tried before, but I’m so glad I did! The quality is exceptional, and the fit is absolutely perfect. Thank you, Sienna London.

Sarah Bennett
2 hours ago
★★★★★

Outstanding Customer Service & Care

I had a question about returns and got a reply within minutes. The team was so kind and patient they really care about their customers. My order arrived right on time and exceeded expectations!

Jessica Brown
4 days ago
★★★★★

Fast Delivery & Exquisite Packaging

Fantastic experience with Sienna London! My order arrived quickly, beautifully packaged, and the quality exceeded my expectations. I’ll definitely shop here again!

Ella Adams
1 day ago
★★★★★

Exceptional Quality & Beautifully Made

I’m so happy with my order from Sienna London! The quality is amazing, and every detail feels carefully made. Great service too, Highly recommend!

Kristen Whitman
4 hours ago

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Frequently ASKED QUESTIONS

Yes, we offer free premium shipping on all orders. We want to make sure your purchase arrives quickly and safely at no extra cost.

Absolutely! You can return your order within 30 days of receiving it. Items must be unworn, undamaged, and in their original condition. Simply reach out to us through our Contact Page or email us directly at support@sienna-london.com, and we’ll guide you through the return process.

Once your order has been processed, you will receive a confirmation email with your personal tracking number. You can then track your package anytime through our Order Tracking Page.

Each product includes a detailed size chart to help you pick the best fit. If you’re between two sizes, we recommend going one size up for extra comfort. Still unsure? Our customer support team is happy to assist you.

You can shop safely and securely with the following payment methods:

  • Credit Cards
  • Apple Pay
  • Google Pay
  • Shop Pay

Yes, your payment is 100% secure. We use industry-standard SSL encryption to protect your information and ensure a safe checkout process.

Orders are typically processed within 1–3 business days. Delivery times may vary depending on your location and seasonal demand, but you will always receive tracking updates by email.

Our customer support team is always happy to help. You can reach us through the Contact Page or by email at support@sienna-london.com. We usually reply within 24 hours.

FREE SHIPPING WITHIN THE U.K

Free shipping on every order across the U.K. this week only. We’ll deliver straight to your door, safely and without extra cost.

30-DAY MONEY-BACK GUARANTEE

Shop with confidence. We offer a 30-day money-back guarantee if you’re not completely satisfied.

SECURE CHECKOUT

Enjoy a secure checkout with credit card. We want you to feel completely confident every step of the way.