Would Your 15-Year-Old Self Listen to You?

In honor of International Day of the Girl (which is being celebrated for the first time today), CNN asked Oprah, Melinda Gates, Arianna Huffington, and many other notable women: "Looking back, what one piece of advice would you give to your 15-year-old self?" » 10/11/12 4:10pm 10/11/12 4:10pm