Hilary Duff, Sutton Foster Hilary Duff, Sutton Foster

Lizzie McGuire is so yesterday and today is all about Hilary Duff's new sitcom Younger.

The former Disney star returns to TV as Kelsey, a twentysomething who helps her 40-year-old single mom co-worker Liza (Sutton Foster) pass herself off as 26 to get ahead in the publishing world. Shenanigans ensue.

Hannah Montana stars: Where are they now?

The TV Land comedy doesn't premiere until Tuesday, March 31 at 10/9c, but you can watch the premiere right now!