We've added a behind the scenes photo Demi added to her personal twitter of herself on the set of Grey's Anatomy for the taping of the episode 6x22 Shiny Happy People. Take a look!

She’s been practically clawing her eyes out to meet the cast of her favorite show, and now Demi Lovato’s got her chance. When the 17-year-old Sonny With a Chance star arrived on the Grey's Anatomy set to shoot her May 13 guest appearance, “The first two actors I met were Justin Chambers and Jessica Capshaw, and I was like, ‘There’s Karev and Arizona!’ Then I met Patrick Dempsey.” On a tour of the hospital set, she picked up a patient’s chart to pretend she was making rounds. But Demi’s not playing a new med student; she’ll be a frightened patient named Hayley, who might suffer from schizophrenia (see the claw marks in this exclusive first-look photo). A new fan to Grey’s, Lovato began catching up on the series during breaks on the set of Camp Rock: The Final Jam, a Disney Channel TV-movie sequel airing in July, which teams her up again with real-life beau Joe Jonas. Read More?

Joe Jonas & Demi Lovato will attend the blue carpet premiere of Disneynature’s motion picture 'Oceans.' Narrated by Pierce Brosnan and featuring never before seen imagery captured by the latest underwater technologies, 'Oceans' offers an unprecedented look beneath the sea in a powerful motion picture that unfolds on Earth Day, April 22, 2010. Premiere is Saturday, April 17, 2010 with celebrity arrivals at 1 PM @ El Capitan Theatre 6838 Hollywood Blvd. Hollywood, CA.'See OCEANS, Save Oceans' is an initiative in which Disneynature will make a contribution to The Nature Conservancy to save coral reefs in honor of every guest who sees 'Oceans' during opening week.