When it comes to teen-movie villains, there's no one quite like Mean Girls' Regina George. In honor of Oct. 3 (aka National Mean Girls Day), we're looking back on some of her most hilarious ...

Regina George Taught Us Most of the Style Lessons We Learned From Mean Girls. By Sarah Wasilak. Updated on April 30, 2015 at 9:40 AM. Paramount Pictures Paramount Pictures.