Aussie movie star Toni Collette is considering giving up acting for a career as a rock star.

The actress, who played a karaoke queen in break-out movie Muriel's Wedding, is set to become the latest movie star to attempt a music career when she releases her debut album this Christmas (05).

She says, "I don't know if I want to do this (acting) forever."

Collette is also planning to tour America next year (06) with her husband, drummer Dave Galafassi (corr).