First Look At Demi Lovato & Adam Lambert On This Week's GLEE

AMERICAN IDOL standout Adam Lambert and The X Factor former judge Demi Lovato return to FOX's hit musical dramedy series Glee this week in their extended guest starring character arcs and a first look at the actors in action alongside show lead Chris Colfer is now available to view.

The official description of this week's "Trio" episode of Glee is as follows: "As graduation approaches, Tina, Blaine and Sam band together to hold a senior "lock-in" at school, hoping to savor their last chance at hanging out together. But their plans are thwarted when Becky joins unexpectedly. Meanwhile, in New York, Elliot (guest star Adam Lambert) is stuck in The Middle between Rachel and Santana's feud."

GLEE airs on Tuesdays at 8 PM on FOX.

Additionally, the highly anticipated 100th episode airs on March 18.

For more information on GLEE, visit the official site here.

View a larger version of the new photo of Adam Lambert and Demi Lovato on Glee below.

Photo Credit: Facebook