Many women have problems with their butt in a bikini bottom. The problem with your standard bikini bottom is the material begins to gather at the top too much making your butt look a bit dumpy.
Growing in popularity is the Pucker Bottom Bikini which is easily defined by the pucker in the back. See the image on the left for clarification. Pucker bottom bikini’s hug the curves of your butt cheek and give the appearance of a nice full round behind that is very pleasing to the eye.