Collette's acting career began during the early 1990s. She starred in several Australian movies, including: "Muriel's Wedding", "In Her Shoes", "Little Miss Sunshine" and "The Black Balloon". In 2013 she had a convincing starring role as an American mother in the Nat Faxon and Jim Rash Hollywood coming of age comedy "The Way, Way Back". She is the lead singer of rock band Toni Collette & the Finish.