Premise: Avril Lavigne . The Best Damn Thing , Lavigne 's third album , was released in April 2007 , becoming her third number 1 album in the UK Albums Chart and featuring her first US Billboard Hot 100 number 1 single , `` Girlfriend '' . Lavigne has scored six number-one singles worldwide , including `` Complicated '' , `` Sk8er Boi '' , `` I 'm with You '' , `` My Happy Ending '' , `` Nobody 's Home '' , and `` Girlfriend '' . `` Girlfriend '' is a song by Canadian singer-songwriter Avril Lavigne .
Hypothesis: Avril Lavigne sang a song.
Label: ENTAILMENT