Let Go made Lavigne the youngest female soloist to reach #1 in the UK, and the album was certified four-times platinum by the Recording Industry Association of America. As of 2009, over 16 million copies had been sold worldwide, more than 6 million of which were sold in the United States. Her breakthrough single, "Complicated", peaked at #1 in many countries around the world, as did the album Let Go. Her second album, Under My Skin, was released in 2004 and was her first album to peak at #1 on the U.S. Billboard 200 , eventually selling more than 10 million copies worldwide. The Best Damn Thing, Lavigne’s third album, was released in 2007. This album gave Lavigne her third #1 album in the UK Albums Chart and featured her first U.S. Billboard Hot 100 #1 single, "Girlfriend". Lavigne has scored a total of five #1 singles worldwide, including "Complicated", "Sk8er Boi", "I'm With You", "My Happy Ending" and "Girlfriend". With more than 30 million copies of her albums sold worldwide, Lavigne is currently one of the top-selling artists releasing albums in the U.S., with over 10.25 million copies certified by the RIAA. Her fourth studio album, Goodbye Lullaby, will be released in March 2011.
Avril Ramona Lavigne was born in Belleville, Ontario, the daughter of Judith-Rosanne "Judy" (née Loshaw) and Jean-Claude Lavigne. Her father, who is of French Canadian descent, named her Avril after the French word for the month of April. She has an older brother, Matthew, and a younger sister, Michelle. A daughter of a working-class family, Lavigne, at the age of two, began singing church songs along with her mother. When Lavigne was five years old, the family moved to Napanee, Ontario, a town with an approximate population of 5,000. Although she struggled with paying attention in school, sometimes kicked out of class for misbehaving, her parents were supportive of her singing. Her father bought her a microphone, a drum kit, a keyboard, several guitars, and converted their basement into a studio. When Lavigne was 14, her parents would take her to karaoke sessions. Lavigne also performed at country fairs, singing songs by Garth Brooks, The Dixie Chicks, and Shania Twain. She also began writing her own songs. Her first song was called "Can't Stop Thinking About You", about a teenage crush, which she described as "cheesy cute"