Sweetheart Swimsuit Navy & Plum - Monroe

Size Guide

This elegant new style combines a classic navy swimsuit with a sweetheart neckline with contrast plum panels to celebrate your waist and elongate your legs. Featuring built-in bust support and slim but supportive straps, why not tuck the straps in for strap-free tanning? 

Our Monroe shape is designed to fit C-E cup busts.


We are currently restocking this item. Preorder for dispatch w/c 13th December

Not sure about size?
  • Luxe under-bust elastic for lift and shape.
  • Low-cut under the arms for active use without chaffing.
  • Medium, flattering cut on the leg.
  • Full bottom coverage. No unwanted wedgies here.
  • Our Monroe model Berry usually wears a UK size 12 on top, a size 14 bottoms and a 32D bra. Shown here wearing a Deakin and Blue size 14 Monroe.
  • Super soft, high quality, sustainable Italian Lycra®. Lined, for double support. 
  • Made from recycled yarn ECONYL® from regenerated waste such as old fishing nets and industrial plastic scraps.
  • Soft, stretchy, light and breathable.
  • 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
4.9 Based on 14 Reviews
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Filter Reviews:
    Linda L.
    United Kingdom

    Very flattering and extremely comfortable

    I spent quite a long time considering whether to buy a Deakin & Blue swimsuit as they're not the cheapest, but having just come back from a two week beach holiday I'm so glad I did. The cut is very flattering and even more importantly it's so comfortable. Straps are super-soft, don't dig in, and it's an absolute join to swim in. Everything stays put, but with free range of movement. Now I just wish I'd bought it sooner!

    United Kingdom United Kingdom

    Love it ❤️

    Such a cute design and I love the way the bust area has been labelled for sizing

    United Kingdom United Kingdom

    Walk tall

    It took me months to buy a Deakin and Blue swimsuit. I was attracted by the style and the ethics but the price put me off time after time. Now now I have one I wear it whenever I can. It fits perfectly, flatters me beautifully and never rides up. I walk taller and swim stronger in this cossie.

    Jude B.
    United Kingdom United Kingdom

    Worth the price tag

    It took me ages to bring myself to spend so much money on a swimming costume but it is well designed well constructed and I love it!

    Ruth L.
    United Kingdom United Kingdom

    Worth the wait ...

    I own quite a few Deakin & Blue swimsuits already, but I’d been waiting ages for this to come back into stock. Finally got it and it was well and truly worth the wait. Lovely colours, great fit and so flattering. More colours please ...

    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