Did you know that there are 5 types of butts in the World?

New York City plastic surgeon Matthew Schulman shares with Cosmopolitan that over the course of his career, he’s examined approximately 50,000 butts and that the 5 types of butts are: square, v-shape, a-shape, round, and upside-down heart.

Your butt shape is dependent on the placement of the pelvis and hip bones, the distribution of fat, how your muscles attach to the thigh bone, and the size of your gluteus muscles.

So which one are you? Check out the images below, courtesy of Cosmopolitan.