I am 34D in bras and about a large in bottoms. Sometimes I usually can get away with a medium so I tried my luck with this set. The bra was a tad too big so I had to keep tugging and the bottoms of course were a tad too tight. I’d say get regular size and get top altered. Also the set wasn’t so cute, sort of old fashioned or maybe that’s just on me because it didn’t fit properly.