Popular Teen HairstylesTeen hairstyles have always been an important form of self-expression for youth culture. Stylish teen hairstyles are an important way for teens to gain peer approval, and a bad haircut can ruin a teen?s reputation. Celebrities that teenage girls are currently watching to find the trendiest looks include Miley Cyrus, Hilary Duff, Ashley Tisdale, Vanessa Hudgens, Brenda Song, Selena Gomez and Rihanna.