написать описание того, кого вы знаете сколько лет он/она какого роста

I would like to describe my best friend. She is 14 years old. She isn't very high, about 1m and 50sm. She is very fit and sporty, so she doesn't weight much. I don't know how much she weights exactly. She is very good looking and stylish. She goes to an art school and a gym. She also likes biking and swimming.