Avril Lavigne is a musician.
Avril Ramona Lavigne ( [ ˈævrɪl_ləˈviːn ] [ avʁil laviɲ ] ) ( born 27 September 1984 ) is a Canadian singer-songwriter and actress . Lavigne has scored six number-one singles worldwide , including `` Complicated '' , `` Sk8er Boi '' , `` I 'm with You '' , `` My Happy Ending '' , `` Nobody 's Home '' , and `` Girlfriend '' . `` Complicated '' is the debut single by Canadian singer-songwriter Avril Lavigne , released in 2002 from her debut album , Let Go .