Avril Lavigné is a Canadian singer-songwriter, actress, and philanthropist. She is best known for her hit singles "Complicated," "Sk8er Boi," and "Girlfriend." At the age of 15, she signed a two-album recording contract with Arista Records worth more than $2 million. Since then, she has gone on to become one of the most successful female artists in the world. Her songs have sold over 40 million copies worldwide, and she has won numerous awards, including eight Grammy Awards and seven Juno Awards. She is also an advocate for children's rights and environmental protection, having founded the Avril Lavigne Foundation in 2010.