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    If you're after a beautifully made one-piece that you'll reach for year after year, stop the search. COSSIE+CO is a luxury British swimwear brand offering a perfectly formed capsule collection of forever swimsuits. 

    The brainchild of fashion executive Isobel Elphinstone, the brand takes all the fuss out of finding a suit that fits properly. By focusing on just four thoughtful, flattering designs, Isobel has created classic silhouettes with a modern and effortless edge. We love that each costume is made using double-lined honeycomb fabric that gives natural support without under-wiring or fussy panels. And it has a matt finish, which looks super-chic on the beach (or worn as a bodysuit at the bar afterwards). This is luxurious, versatile swimwear that you don't need to wait for your next holiday to wear.

    The collection consists of four styles, offered in five gorgeous colours, blush, mustard, navy, white and khaki. Here's a quick meet-and-greet: The POPPY is simple and no-nonsense, but super-feminine; The LEXY is sleek with thin straps and an ultra-low back; The CJ is a timeless halter with a low-plunging neckline and open back; while The CHAZZY has a retro vibe, with a bandeau top and cut-out details on the front and back. Even better, we've collaborated for an exclusive colour-way (mustard) on The CHAZZY, just for you.

    To receive a special 10% off your order on any of the styles, use the code ICONSGIRL at the checkout.

    5 questions with

    Isobel Elphinstone

    Your favourite beach holiday destination?

    It has to be Zighy Bay, Oman. You want for nothing… and there’s no jet lag.

    The items you never fail to pack in your summer suitcase?

    A huge, super-chic straw hat and a really good book. We have a slight sunglasses obsession in our household, therefore I always pack a selection of my current faves – at the moment, that’s an amazing vintage orange Christian Lacroix pair. I also can’t get enough of Illesteva. It goes without saying that I always need an array of cossies, too!

    Your ultimate travel essential?

    I’ve been in love with the Eddie Harrop leather voyager bags forever. I finally got one this year and it comes everywhere with me. Any excuse and it will be in tow!

    Your favourite of-the-moment brand?

    Otiumberg. I just love all their jewellery. It’s my go-to for everyday essentials and I want everything.

    Your beauty must-haves?

    I have two. The Sisley Black Rose Cream Mask is a miracle worker when you feel your skin is looking a little dehydrated and needs a fast-plumping fix. And Evian water spray – you can’t beat it.

    Follow COSSIE+CO on Instagram @cossieandco

    These beautifully made one-pieces are so thoughtful in their design, from the supportive, matt fabric to the chic colour palette and small design flourishes. The suits feel both modern and timeless, which means they'll have real longevity in our beach wardrobe


    United Kingdom

    Royal Mail 1st Class Signed For (2 – 3 working days) from £3.00*

    Royal Mail Next Day Guarantee is available – from £7.30*

    (Please note that for next day delivery, orders need to be placed by 12pm Monday to Friday only. Not guaranteed for Saturday delivery)


    Royal Mail International Tracked & Signed (3 – 5 working days) – from £9.10*


    Royal Mail International Tracked & Signed (5 – 7 working days) – from £11.15*

    (Please note shipping prices do not include any local taxes or import duties which may be charged to the recipient on arrival)

    *Prices may vary depending on the weight of the shipment (i.e. the number of COSSIES ordered)

    A signature is required for all shipments, organising a redelivery is the responsibility of the customer. If goods are returned to COSSIE+CO a second redelivery charge will be incurred.

    Bank Holidays + Weekends are not included as delivery days. Orders placed before 12pm will be dispatched the same working day. Orders placed after 12pm will be dispatched the next working day.


    COSSIE+CO will gladly accept returns on all items (except items marked Final Sale) within 14 days of delivery. Items must be unwashed, unworn, with original tags, the hygienic liner and in the original packaging.

    Returns process:

    · Please contact hello@cossieandco.com to notify them of your return within 7 days of delivery, and they will issue you with an RA number (Return Authorisation).

    · Complete the Returns Form included in your delivery – ensure all info is complete.

    · Send returns to the below address, and please include the Returns Form in the package:

    COSSIE+CO, 30 Thornfield Road, London, W12 8JQ, UK

    · Once returns are received, please allow 10 days for your refund to be processed.

    Please note COSSIE+CO will not be able to process any returns that do not include the RA number on the Returns Form. If you have misplaced your Returns Form, please email hello@cossieandco.com.

    Shipping costs (if applicable) are non-refundable. Return handling and return shipping costs are the responsibility of the customer. COSSIE+CO is not responsible for any returns lost in transit – it is recommended you include tracking and insurance for your protection.

    COSSIE+CO has full discretion in determining if items are in original condition when returned.


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