Australian actress Toni Collette performs during the first

Live Earth concert in Sydney, Australia, Saturday, July 7, 2007. [AP]

Toni Collette had been leaning toward motherhood roles, and now she thinks she knows why: The Oscar-nominated actress confirmed Monday that she's pregnant.

It will be the first child for the 34-year-old Australian actress and her musician husband, Dave Galafassi.

"We're very happy. We are completely over the moon," she said.

Collette was nominated for an Academy Award in the best supporting actress category for her role in 1999's supernatural thriller "The Sixth Sense," and her more recent roles include a mother in the dysfunctional family comedy "Little Miss Sunshine."

"It is strange the last three films I've done I have been pregnant," said Collette, who is currently in Sydney with her side project, a rock'n'roll band that includes Galafass on drums. "I'm just like, what is the universe trying to tell me?

"But I think everything happens when it's meant to," she said.

Collette and her band, the Finish, were among the acts that appeared Saturday at the Sydney edition of Live Earth, the global concert series that aimed to raise awareness about global warming.