This was so cute but I can’t fit the top have to buy a large

I’m 5’6 140 36B I got a medium. The top is too big and the bottoms are too small. the top has full coverage sized cups so for me I had zero flesh exposed which isn’t necessarily a bad thing but the bottoms fit like a small and my butt isn’t even all that big. I normally get a medium in FN bathing suits and they fit cute so this is just a flop.