X-Back Swimsuit Cobalt - Monroe

Size Guide

We're delighted to introduce this much loved style in a bright, bold Cobalt. Designed to adapt perfectly from lengths and laps to holiday lounging. With built-in bust support and a flattering scoop back for maximum tan, this piece is fast becoming a swim-wardrobe staple.

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


Dispatch w/c 8th July

Not sure about size?
  • This style is shorter in the body length. If you are long in the body, we recommend going up a dress size. For a fuller fit on the bottom we also recommend going up a dress size. 
  • Features luxe under-bust elastic for lift and shape.
  • Medium, flattering cut on the leg. 
  • 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 12 Monroe. (She's sized down for a cheekier fit on the bottom).
  • Super soft, high quality, sustainable Italian Lycra®.
  • Made from recycled yarn ECONYL® from regenerated waste such as old fishing nets and industrial plastic scraps.
  • Soft, stretchy, light and breathable. Perfect blend of muscular compression and comfort.
  • Durable and designed to last. 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 13 Reviews
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    United Kingdom

    Lovely costume but...

    I was impressed about well made this costume was. Unfortunately I had to return it as there was not enough bust support for me. Without a soft cup inside the costume, I felt unsupported.

    United Kingdom United Kingdom

    Fabulous colour, fit, feel and quality.

    The X back is the 2nd D&B cossie I have bought. The material is beautifully soft and very supportive being double layered. The colours are lovely, I chose the cobalt which is a zingy blue. The quality is superb. Initially I was reluctant to spend quite so much on a cossie but previous cheaper (much cheaper) cossies just faded and lost their stretch very quickly so it is probably a false economy to buy them. The best thing about D&B cossies are they are such a joy to wear.

    Elise W.
    United Kingdom United Kingdom

    Love this costume!

    Love the fit and the colour. Feels really well made and keeps the bouncy bits in place!

    Lucy SVG verified by SHOP
    United Kingdom United Kingdom

    Have had my first swim in this and very happy with the look fit and feel. Did feel a bit disappointed that I ordered 2 items and both came in the wrong size and shape. Return and customer service was straight forward, am keeping this one.

    United Kingdom United Kingdom

    Fabulous swimsuit! Tips for E/F cup size.

    I love this swimsuit! Lots of compliments about the cross-back from friends at my swimming pool. I couldn't decide between cobalt and plum - both gorgeous, strong colours. I'm between cup size E/F. I first ordered a Monroe (cup C-E) because other swimsuits have quite a lot of stretch usually, but the D&B fabric is different: quite a firm hold, which once you get used to makes you feel wonderful! No saggy bits at all :) However, this means the Monroe wasn't quite roomy enough for me. I then ordered a Hendricks (cup F-H) in Plum which is a better fit AND now have the choice of colour too!

    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