Ashton Kutcher's personal world is about to collide with his professional world.

Just days after the actor got engaged to Mila Kunis, CBS confirms the actress will guest star on Two and a Half Men Season 11.

According to a network press release, Kunis will portray Vivian on the CBS sitcom, a "free-spirited world traveler" who captured Walden's heart when she ends up on his doorstep.

The only hiccup? He's about to propose to someone else.

Kunis, of course, has become known mainly for her movie roles. But she rose to fame (opposite Kutcher) on That 70s Show and also voices Meg on Family Guy.

Matt Richenthal is the Editor in Chief of TV Fanatic. Follow him on Twitter and on Google+.