Let Go

Lavigne released her debut album, Let Go, on June 4, 2002 in the United States, where it reached number two. It peaked at number one in Australia, Canada, and the United Kingdom. This made Lavigne, at seventeen, the youngest female soloist to have a number-one album in the United Kingdom until that time.By the end of 2002, the album was certified four-time platinum by the RIAA, making her the best-selling female artist of 2002 and Let Go as the top-selling debut of the year. By May 2003, Let Go had accumulated over 1,000,000 sales in Canada, receiving a diamond certification from the Canadian Recording Industry Association. As of 2009, the album has sold over 16 million worldwide. RIAA has certified the album six-time platinum, denoting shipments of over six million.
Lavigne's debut single and the album's lead single, "Complicated", went to number one in Australia and number two in the United States. "Complicated" was one of the best-selling Canadian singles of 2002. Subsequent singles "Sk8er Boi" and "I'm With You" reached the top ten in the United States.Lavigne was named Best New Artist at the 2002 MTV Video Music Awards, won four Juno Awards in 2003 out of six nominations, received a World Music Award for "World's Best-Selling Canadian Singer", and was nominated for eight Grammy Awards, including Song of the Year for "Complicated" and Best New Artist.

Lavigne appeared in the video to "Hundred Million" by the pop-punk band Treble Charger and "Bethamphetamine (Pretty, Pretty)" by the hard rock singer Butch Walker. Lavigne covered Green Day's "Basket Case", which she performed at the Try To Shut Me Up Tour.