Hello, I'm glad to answer your question. Girls have long legs for two reasons. Reason one: genetic inheritance. If a girl's parents have long and thick leg hair, there is a certain chance that it will be passed on to her children, resulting in long leg hair for girls. The second reason: food factors, if girls take too many hormones in adolescence, may also lead to longer hair such as leg hair. If there is really too much leg hair, I suggest you go to a regular beauty hospital for laser hair removal. I hope my suggestion is helpful to you. If you want to gain more authoritative knowledge of medical beauty, you need lemon to love beauty.