Signature Swimsuit Navy - Monroe

Size Guide

Our best-selling and award-winning Signature Swimsuit in classic navy and black is a perfect cossie for your weekly swim and a good quality, trusted holiday staple. You'll love the built-in bust support and the flattering sweetheart neckline. 

Our Monroe shape fits C-E cup busts. For AA-B busts, shop The Hepburn. For F-HH busts, shop The Hendricks.

Don't forget to go up a dress size in this style as the fit comes up a little small.

1 item left in stock

Dispatch w/c 8th July

Not sure about size?
  • Fits small to size. We recommend going up a dress size with this style. So if you usually wear a size 12, order a 14 in this style.
  • Luxe under-bust elastic for lift and shape.
  • Medium cut on the leg with flattering but full bottom coverage.
  • Our Monroe model Amanda is 5'10 / 178cm tall. She usually wears a UK size 14 and a 36D bra. Shown here wearing a Deakin and Blue size 14 Monroe.
  • Super soft, high quality, sustainable Italian Lycra® with neckline, waistline and hips highlighted in soft & sculpting Italian powernet mesh.
  • Lycra® made from a recycled yarn called ECONYL® - made from regenerated waste such as old fishing nets and industrial plastic scraps.
  • Durable and designed to last. Our chosen Lycra® is twice as resistant to chlorine, salt water and oils than standard Lycra. Full UV protection.
  • Designed and manufactured responsibly in London, UK.
  • Rinse after every use and hang to dry. Machine wash at 40° after every 2-3 uses. See full details on how to care for your swimwear.
  • 78% Recycled Polyamide, 22% Elastane.
Customer Reviews
5.0 Based on 13 Reviews
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    United Kingdom United Kingdom

    Boosts confidence

    I wriggle into my costume and know it will fit perfectly. The wide straps give it good structure

    Andrea S.
    Germany Germany

    Love it!

    It is absolutely gorgeous! I love it so much. It looks really good and gives a good feeling. And it also feels perfectly supporting when I’m swimming. The only thing that hinders me from buying another one right away is that I had to pay more than 30 Euro when it was delivered (tax or custom duty) which I did not expect.

    Allison D.
    United Kingdom United Kingdom

    The envy of the Swim Group!

    Initially I purchased this costume in my usual size 8 as I hadn’t read the sizing guide; it was tight squeeze to get on. However, once on it looked amazing and as stated, the costume stretches to fit over a couple of wears. But, because I loved it and to be genuinely sure I had the correct size I purchased size 10. Probable a better fit, but I still wear both as I know I fluctuate in size. The material is robust and feels great for sea swimming. Plenty of comments I on how great it looks too.

    Val P.
    United Kingdom United Kingdom


    This has to be the most stylish and flattering swimsuit I have ever owned. It's stunning. Also very comfortable. Great customer service too.

    Lauren F.
    United Kingdom United Kingdom

    Flattering and comfortable

    Great swimsuit - really flattering and comfortable, and the mesh bits have sun protection. I actually disagree with the advice to size up - I tend to be a 14 and the 16 was far too large for me. Even the 14 is a little roomy in the bottom area - especially once wet - so I think it does depend on your body type. I think I could probably get away with a 12.

    Did you know?

    Our award-winning swimwear has been featured in The Guardian, The Times, The Telegraph, Women’s Health & more

    Here for a good time and a long time; our swimwear is thoughtfully designed to last season after season, swim after swim

    We have over 500 5* reviews for our products on our website, Google & Facebook - our customers love what we do!

    We offer free delivery and returns in the UK on all orders over £100: even more reason to treat yourself