Skip to product information
Pickup currently not available
A Rather Splendid Slip Dress That Actually Works
We have, quite by accident, created something rather marvellous. The Sky Dress is a delicate slip with adjustable tie straps and a sash that lets you fiddle with the fit until it looks utterly fetching. The square neckline sits beautifully with contrast piping, and honestly, it is the sort of thing that makes getting dressed feel like less of a struggle.
Why Choose Our Slip Dress
100 Percent Vegan Silk That Feels Glorious: Crafted from cupro, this fabric is woven from sustainably sourced wood in Japan. It is cool, lightweight, and wonderfully anti-allergenic, making it rather good for sensitive skin types.
Adjustable Fit For Your Body: Tie straps and a sash mean you control how snugly it sits. No faffing about with alterations.
Made With Proper Craftsmanship: Natural Corozo buttons and French seams throughout. The sort of details that make you feel like you have made a sound decision.
Sustainably Made in East London: We make this close to home, which keeps our footprint pleasantly small.
Your Colour, Your Way: Choose your own bespoke colour combination. Boring it is not.
Product Details
Material: 100 percent cupro vegan silk from sustainably sourced Japanese wood
Buttons: Natural Corozo
Seams: French seams for a luxury finish
Care: Hand wash only to keep things lovely
Availability: Pre-order only. We craft each piece to order, so allow 3 to 6 weeks for delivery. Rather worth the wait.
This is a made-to-order piece, which means you get exactly what you want without the waste. Splendid, really.
SHIPPING + RETURNS
THE RATHER IMPORTANT BITS
This rather lovely piece ships directly from our brand partner - we work with independent brands who are absolutely brilliant and work frightfully hard to create beautiful things.
SHIPPING DESTINATIONS
Now, here's the thing - our wonderful brand partners ship to lots of different places, but not all of them can ship worldwide.
Some are brilliant at international shipping, others prefer to keep things closer to home.
At checkout, you'll see exactly where this particular brand can send your goodies.
We're terribly sorry, but shipping costs do vary rather wildly depending on where you are in the world. The exact figures pop up at checkout - no nasty surprises!
RETURNS
You have 14 days to return items.
Now, we absolutely adore our brand partners - they work incredibly hard and we do try to support them as much as we possibly can. So I'm rather afraid we have to pass the return postage costs back to you. Frightfully sorry about that!
🌍 PLEASE CHOOSE THOUGHTFULLY:
Our wonderful partners put their hearts into everything they make.
Ordering multiple sizes to try at home is rather hard on our planet and makes things jolly difficult for these brilliant independent creators.
When in doubt, do ask us first!
PAYMENT
We're frightfully modern and accept all the usual suspects:
Visa, Mastercard, American Express, PayPal, Apple Pay, Google Pay, and Shop Pay
SECURE AS HOUSES
Everything's properly encrypted and secure - your details are safer than the Crown Jewels!
All prices in lovely British pounds £ GBP, though international chaps will see converted prices.
Any payment pickle? We're here to help sort things out! Contact us
We Have Lots More Like This.........
Hello, we are Sostter....
Sostter began, as all good ideas do, with a lively conversation and a shared sense of frustration. Why had the world of independent design become so serious, so samey, so… beige? Where was the spark, the imagination, the sheer joy of discovering something that made you stop and stare?
We dreamt of a marketplace that celebrated difference — where curious minds could explore a world of independent brands, design-led makers, and thoughtful artisans. A space that felt exciting, human, and beautifully imperfect.
Today, Sostter brings together remarkable people and their creations — from London to Lausanne, Brooklyn to Berlin — uniting makers and discoverers through craftsmanship, creativity, and conscience. Every object tells a story, and every purchase supports an independent brand doing things differently.
This is just the beginning. But enough about us — step inside, explore our world, and see what catches your imagination.
Giving Back
We’re proud to support Sutton Night Watch, a grassroots UK charity making a real difference in the lives of those facing homelessness. Through regular donations of stock, supplies, and essentials, we back their mission to offer warmth, dignity, and practical help to anyone in need — right where it matters most.
Sell with us
Sostter partners with independent brands that intrigue, inspire, and bring something genuinely different to the world of fashion, design, and living.Join us!