Quick Answer

To find your perfect bikini top size, measure your underbust and overbust in inches, then use your current bra size as a starting point—Curvy Kate swim tops follow the same UK sizing as their bras.

Why Swimwear Sizing Differs from Regular Bras

Swimwear tops are designed to handle water, sun, and movement, so the fit can feel slightly different from an everyday bra. The fabric may have less stretch, and cups can be cut a bit shallower or deeper depending on the style. That's why it's worth checking the specific fit notes for each bikini top rather than assuming your bra size transfers directly.

Curvy Kate bikini tops use the same UK cup sizing as their bras, which is great news if you already know your bra size. But because swimwear is worn less frequently and often in warmer conditions, you might prefer a slightly looser band or a different cup shape. Trying on or ordering two sizes when you're between sizes can save you a return trip.

Style Matters: Padded vs. Non-Padded

A padded balcony bikini top gives extra lift and shape, which can be helpful if you want a smoother silhouette under clothing or a bit more coverage. Non-padded styles, like the scooped balcony tops, offer a more natural shape and tend to dry faster. Both can be supportive when they have underwired cups, so the choice comes down to the look you prefer.

If you're between cup sizes or your breast tissue is softer, a padded style can help fill the cup more evenly. On the other hand, non-padded tops often accommodate a wider range of shapes because the fabric molds to you. Think about where you'll wear the top—beach, pool, or as a top with shorts—and how much support you want.

Steps to Find Your Bikini Top Size

  1. Measure your underbust: Wrap a measuring tape snugly around your ribcage, just under your bust. Keep the tape level and breathe normally. Round to the nearest whole inch. This number determines your band size (e.g., 32, 34, 36). Common mistake: measuring too tightly—the tape should be snug but not digging in.
  2. Measure your overbust: Wrap the tape around the fullest part of your bust, keeping it parallel to the floor. Don't pull too tight. Subtract your underbust measurement from this number to find your cup size (1 inch = A, 2 inches = B, 3 inches = C, etc.). Checkpoint: if you're between two cup sizes, size up for a more comfortable fit.
  3. Convert your bra size to swimwear: Use your current UK bra size as a starting point. Curvy Kate swim tops follow the same sizing, so if you wear a 34F in their bras, try a 34F in bikini tops. If you're between band sizes, consider the style—padded tops may feel firmer, so a sister size (e.g., 36E instead of 34F) could work. Common mistake: assuming US and UK sizes are the same—always check the brand's size chart.
  4. Consider the style and coverage: Balcony tops offer a flattering lift and work well for fuller busts. Padded styles add shape, while non-padded styles give a more natural look. Think about how much coverage you want and whether you'll be active in the water. Checkpoint: if the top has adjustable straps, you can fine-tune the fit after trying it on.
  5. Try it on and move around: Once you have a top, put it on and raise your arms, bend, and walk a few steps. The band should stay in place, the cups should fully contain you without spillage, and the straps shouldn't dig in. If there's gaping or pinching, adjust the size or style. Common mistake: judging fit only by how it looks standing still—movement matters.

Curvy Kate Bikini Tops to Consider