Demi Lovato on GREY’S ANATOMY Season 6 (PHOTO)

Demi Lovato on GREY'S ANATOMY

Demi Lovato on GREY'S ANATOMY

Check out a first look of Demi Lovato on GREY’S ANATOMY season 6 episode 22 “Shiny Happy People”, which will air THURSDAY, MAY 13 (9:00-10:01 p.m., ET) on the ABC Television Network.

Episode Synopsis: GREY’S ANATOMY “Shiny Happy People” – An elderly patient admitted into the E.R. for a heart condition sees a familiar face, a long lost love who happens to be in the E.R. as well for a fractured arm, and the staff find themselves caught up in their love story. Meanwhile, Karev treats a troubled teenage patient (guest star Demi Lovato) whose parents brought her in for schizophrenia, and Meredith can’t help but tell Cristina about her suspicions of Owen — which inevitably messes with Cristina’s head — on “Grey’s Anatomy,” THURSDAY, MAY 13 (9:00-10:01 p.m., ET) on the ABC Television Network.

“Grey’s Anatomy” stars Ellen Pompeo as Meredith Grey, Patrick Dempsey as Derek Shepherd, Sandra Oh as Cristina Yang, Justin Chambers as Alex Karev, Chandra Wilson as Miranda Bailey, James Pickens, Jr. as Richard Webber, Sara Ramirez as Callie Torres, Eric Dane as Mark Sloan, Chyler Leigh as Lexie Grey, Kevin McKidd as Owen Hunt and Jessica Capshaw as Arizona Robbins.

Guest cast include Jesse Williams as Jackson, Nora Zehetner as Reed, Jason George as Ben, Demi Lovato as Hayley, Marion Ross as Betty, Allan Mandell as Henry, Amy Farrington as Mary, Jonathan Goldstein as Ken, Austin Highsmith as Amber and Emily Bergl as Trisha.

“Shiny Happy People” was written by Zoanne Clack and Peter Nowalk and directed by Ed Ornelas.

Read all our Grey’s Anatomy coverage.

(Photos: Courtesy of ABC)