Avril Ramona Lavigne

• 2006–08: The Best Damn Thing
On 26 February 2006, Lavigne represented Canada at the closing ceremony of the Torino Olympics, performing her song "Who Knows" during the eight minute Vancouver 2010 portion.
While Lavigne was in the studio for her third studio album, Fox Entertainment Group approached her to write a song for the soundtrack to the 2006 fantasy-adventure film Eragon. She wrote and recorded two "ballad-type" songs, but only one, "Keep Holding On", was used for the film. Lavigne admitted that writing the song was challenging, making sure it flowed with the film. She emphasized that "Keep Holding On", which later appeared on the album, was not indicative of what the next album would be like.
Lavigne's third album, The Best Damn Thing, was released on 17 April 2007, which Lavigne immediately promoted with a small tour. Its lead single, "Girlfriend", topped the Billboard Hot 100 the same week The Best Damn Thing debuted at No. 1 on the Billboard 200 chart. "Girlfriend" was Lavigne's first single to reach this No. 1 position. The single was a worldwide hit; it also peaked at No. 1 in Australia, Canada, Japan, and Italy and reached No. 2 in the UK and France. "Girlfriend" was recorded in Spanish, French, Italian, Portuguese, German, Japanese, and Mandarin. The International Federation of the Phonographic Industry ranked "Girlfriend" as the most-downloaded track worldwide in 2007, selling 7.3 million copies, including the versions recorded in eight different languages. "Girlfriend" ranked on the Hot 100 Singles of the Decade list at No. 94.