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Just like your lingerie, it is essential that your swimwear fits perfectly. Fantasie wants you to feel as amazing as you look while enjoying your day on the beach or by the pool, which is why we offer an extensive range of bra-sized Bikini Tops, Tankini Tops and Swimsuits in up to a J cup, to ensure support and comfort all day long. Explore our guide to finding the right fit for you below...

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How to Find The Perfect Fit

If you already know your current bra size, you'll wear the same size in our swimwear. However, your size can fluctuate from year to year, so it's essential to check the fit of your swimwear regularly.

There are a few signs that can help you identify whether your bikini top or swimsuit is fitting correctly. The first feature is that the central piece of fabric between the two cups should sit flat against your chest, and should not move if you raise your arms. Next, check that the end of the underwire is sitting behind the breast tissue on your ribcage, with no signs of digging in. Finally, the band should fit snugly and parallel to the ground, without riding upwards.

If you're still unsure, see our Swimwear Fitting Video below or continue reading for more ways to find the perfect fit.

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Watch Our Swimwear Fitting Video

Follow our swimwear fitting tutorial, and learn how find your perfect fit for yourself in our cup sized swimwear with the help of one of our Fantasie fit specialists.

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Book A Virtual Fitting

Discover our free and easy one-on-one virtual fitting appointments. Our fit specialists can help you find the size and style for you - not just in lingerie, but in swimwear too - from the comfort of your own home.

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Cup-Sized Swimwear Styles

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Full Cup Bikini Tops

For full coverage that ensures forward projection and uplift, Fantasie's Full Cup Bikini Top style offers ultimate support.

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Plunge Bikini Tops

For a lower coverage finish, opt for the Plunge Bikini Top, featuring a flattering neckline for enhanced shaping and lift.

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Bandeau Bikini Tops

Fantasie's Bandeau Bikini Tops feature adjustable and detachable straps for multiway styling, and padded cups that ensure a smooth, rounded shape.

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Tankini Tops

If you prefer some mid-riff coverage, opt for one of our Tankini Tops. A ruching effect flatters the figure while concealed underwires ensures complete support.

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Our range of Swimsuit styles are designed to complement your shape, and feature concealed underwires that grant enhanced support.


  • I love the support of my Fantasie bra, can I get the same support with a bikini? down-arrow
    Our offering of bikini tops, DD+ Bikini Topstankini tops and swimsuits are cup-sized, which means you can enjoy the same signature Fantasie support that you know and love from our bras, in your swimwear too.
  • How do I get the right fit from my swimwear? down-arrow

    To achieve the perfect fit and support from your swimwear, simply take your usual bra size if you know it. If not, follow our above guide on how find your swimwear size, or watch our swimwear fitting video guide.

    To explore more about the swimwear styles that may offer your silhouette the best support, read our Swimwear For Your Shape and Swimwear Style guides.

    We also offer a free one-to-one virtual fitting service, where one of our wonderful fit experts will help you find the perfect size for you.

  • Should I go up a back size in swimwear? down-arrow

    Our swimwear is cup-sized, so you can take your usual bra size in any of our bikini topstankini tops and swimsuits.

    If you're still unsure, book a free one-on-one virtual bra fitting with one of our fit specialists, who will help you find your size in our swimwear.

  • I’m packing for a Summer holiday, there is so much to think about – what shall I pack for the beach/pool? down-arrow
    Discover our selection of must-have items for your suitcase with our Holiday Essentials guide, from seamless and strapless bras for those tricky-to-style dresses, to beach or poolside swimwear and coverups.
  • What is the best bikini or swimsuit style for my body shape? down-arrow
    To find the best bra shape to flatter your figure and achieve optimum support explore our Swimwear For Your Shape and Swimwear Style guides.
  • I don’t want to have strap marks, what styles do you have with removable straps? down-arrow
    Explore our selection of Bandeau Bikini Tops, with detachable, multiway straps to avoid any strap marks during your sunny getaway, while still achieving effortless support and shaping.
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Swimwear Trends

Achieve on-trend swimwear styling on your next getaway with Fantasie's contemporary styles, featuring beautiful prints in a variety of frames.

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