What are the causes why do women's inner labia get so large. Does it mean she's no longer a virgin?

Answer 1

It's when a woman is "turned on" that it becomes enlarged. More blood flow to the area causes the swelling.

Arousal can enlarge a woman's inner AND outer (more common) labia. There is more. However, the questioner didn't ask why labia are enlarged during sex.

Labia will get larger as a girl goes through puberty. A girl will appear to have no labia, or exceptionally small labia until puberty. Depending on genetics and nationality, women's inner labia have been measured at 1 inch, outer labia have been measured to be as long as three inches, unaroused. Also, it is accepted practice in many cultures for women to stretch their labia by attaching weights. This practice is becoming more common in western society. Devices are sold on the web for stretching labia. Oral sex can elongate labia, too, if the person sucks and stretches the labia regularly. In the U.S. a small number of women have their labia surgically reduced in size, but recent evidence suggests that more women and their partners prefer longer labia because of the sexual stimulation provided to the male and female. Some believe this is all part of an increased focus on females being more interested in sexual gratification during sex , i.e.; over 50% of women 40% of men from 18 to 45 report shaving all or most of their pubic hair to enhance sexual arousal, improved cleanliness and because of how bare genitals can enhance fore play and arousal..