Universal have signed on "Tron: Legacy" and "House" star, Olivia Wilde to join Ryan Reynolds in the cast of the comedy "The Change Up".

Ryan Reynolds and Jason Bateman are both signed for the David Dobkin-directed movie. The story centers on a family man who switches bodies with his best friends, a kind of "Vice Versa" or "13 Going on 30" scenario.

Bateman will play the family man, a law firm employee which Reynolds is cast as his slacker friend. Wilde has been brought on as Bateman's co-worker.

The script was written by "The Hangover" due Jon Lucas and Scott Moore.

Production will begin this fall.

Will has been busy for the last couple of months. Between filming the new season of "House" she has also been filming "Tron: Legacy" and "Cowboys & Aliens".