Demi Lovato to Play Schizophrenic Patient on Grey’s Anatomy

 Michael Buckner/Getty Images

New guy, new gig.

Demi Lovato — who recently admitted she's dating Joe Jonas — will guest star on Grey's Anatomy, she confirmed on Twitter Monday.

PHOTO: Demi and Joe on the red carpet at the Nickelodeon's Kids' Choice Awards

The Disney star will play a schizophrenia patient who gets treated by Karev (Justin Chambers) and Arizona (Jessica Capshaw). Her episode airs in May.

"Demi Lovato's on the Grey's set filming her guest spot. Everyone's super excited around here," Twittered series creator Shonda Rimes.

Added Lovato, "Mr. Patrick Dempsey himself wants me to give a shoutout to you guys! hahahaha so awesome."

PHOTOS: The most memorable Grey's Anatomy moments of all time

Earlier Monday, she wrote, "I'm so thrilled to announce that this week I'm shooting Grey's Anatomy!!!!!!!! 😀 AHHH!!!!"

She Twittered Sunday night that taping the guest spot was "fulfilling one of my biggest dreams."

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