Because Comexim is a Polish brand, the cup sizing is not going to exactly correspond to traditional UK brands (like Panache, Freya, Elomi, Curvy Kate, etc). The size listed IS UK sizing, but Comexim bras run about two cup sizes small compared to these UK brands. SO, for a fit that is technically correct and gives adequate wire coverage on the sides, you should order two cup sizes larger than you do in your regular UK styles. For a little extra oomph, only order up one cup size, especially if you have an empty/shallow upper bust - but keep in mind this will make your swim top less able to completely contain you.
The Comexim Merlyn Padded Plunge Underwire Bikini Top (CMMERLYN) is a fun and flirty underwire bikini top with a high rounded shape and a polka-dot print. This updated take on a classic swimwear style offers Comexim's signature defined shaping and lift thanks to lightly padded underwire cups and adjustable shoulder straps, plus it features blue polka dots on a white background. Pair with the Comexim Merlyn Tie Side Swim Bottom (CMMERLYNTSB), sold separately, for a super cute swimwera look.