On a daily basis, female genitalia are often called vagina. To be precise, the vagina is the muscular tube which leads towards the cervix. The medically correct term for the totality of primary external genitalia ist he vulva (pudendum femininum) [1] [2]

The vulva of every woman is unique and changes in the course of a lifetime. In puberty, the vulva becomes more pigmented, it enlarges and hair is growing under the influence of sexual hormones. Especially the clitoris and the labia grow bigger. [2]

Further Links:
Vulva 3.0, Claudia Richarz und Ulrike Zimmermann, 2014 (Trailer)