There's no such thing as a "normal vulva," according to science.

New research has shown that there is no absolute marker for "normal" female genitalia due to the vast number of variations in existence. The Swiss study examined the vulvas of over 650 white women between the ages of 15 and 84 over a period of two years. Researchers found that the length and general appearances of all of the vulvas varied drastically from participant to participant. While the average length of the inner labia was 43 millimetres, sizes ranged from between five millimetres to 100 millimetres in length. Similarly, the average length of the outer labia was 80 millimetres while the smallest was 12 millimetres and the largest was 180 millimetres. The research did show that some vulva types were more common than others but that overall, there was no such thing as a "normal vulva." This comes after an increasing number of women have opted to undergo labiaplasty surgery to alter the appearance of their vulvas. In recent years, the number of women deciding to have the procedure done has increased by 45 percent. Some medical professionals have called labiaplasties the world's "fastest growing cosmetic procedure."