Once again, Millie Bobby Brown is one of the coolest teenagers on the red carpet. The Stranger Things [1] actress looked absolutely stunning as she attended the MTV VMAs on Sunday. Wearing a fashionable black jumpsuit [2], the 14-year-old had a a little fun with the cameras as she playfully stuck her tongue out and gave a wave. Millie is one of the many stars presenting during the show, and something tells us we can expect even more fun moments from her inside. She's reportedly sitting in between Camila Cabello and Shawn Mendes [3]. Maybe they can talk about their mutual love of Taylor Swift [4]?