Avril Lavigne - Canadian singer, songwriter, designer and actress. Her debut album, Let Go, released in 2002, sold 16 million copies. Subsequent works - Under My Skin (2004) and The Best Damn Thing (2007) - topped the world charts, including the American Billboard 200. Five of Lavigne's songs — "Complicated", "Sk8er Boi", "I'm with You", "My Happy Ending" and "Girlfriend" - occupied the first lines of the world charts. More than 30 million copies of her albums have been sold worldwide. As of January 2011, she was one of the most popular female singers in the United States with 11.5 million albums sold.