Demi Lovato will be pulling double-duty on Fox this summer…

The 21-year-old part-Mexican American actress and The X Factor judge has signed on for a major season-five role on the network’s musical dramedy Glee.

Lovato will portray Dani, a New York-based struggling artist who befriends Rachel (portrayed by Lea Michele) and Santana (Naya Rivera).

Lovato will also have frequent interactions with American Idol alum Adam Lambert‘s under wraps character.

Lambert and the former Disney Channel star will have several musical numbers together in Lovato’s six-episode stint.

The Glee role marks Lovato’s first acting project since her Disney Channel series Sonny With a Chance ended in January 2011.

Glee will work around Lovato’s The X Factor schedule

Glee returns on Thursday, September 26, at 9:ooam p.m., with the first part of its Beatles tribute. The show’s Cory Monteith tribute episode airs on October 10, after which the series will take a short hiatus.