All grown up! Hilary Duff has left her Lizzie McGuire days in the past. The newly single star enters the working world in her new TV Land comedy, Younger, as the twentysomething coworker of Sutton Foster's Liza — a 40-year-old single mom who passes herself off as 26 to get her foot in the door in the publishing world after being out of the workforce for many years.

Although the show doesn't premiere until Tuesday, March 31 at 10 p.m., TV Land has put the debut episode online early for your viewing pleasure — and you can watch it here.

Debi Mazar, who plays Liza's co-conspirator and the only one who knows her secret, told Us Weekly that filming the show was a "great experience."

"The show was really fun and the premise is really smart," she told Us at the Cinema Society and Stuart Weitzman's screening of Cinderella on March 8. "I think it has a lot of important things to say about ageism and careers and things like that."

Watch the first episode above and tell Us, will you tune in for more Younger?