Demi Lovato: "Grey’s Anatomy" role is a dream come true

Teen queen Demi Lovato will be guest-starring on "Grey's Anatomy" – a gig that she says represents one of her “biggest dreams” coming true.

“I’m so thrilled to announce that this week I’m shooting Grey’s Anatomy!” the star of Disney’s ‘Soony with a Chance‘ revealed on Twitter, Monday. “AHHH!”

Lovato first teased her ‘Grey’s’ visit on Sunday, telling her Twitter followers she’d be “getting up early tomorrow morning to begin a week of fulfilling one of my biggest dreams.”

The 17-year-old actress-singer added that she was “so excited… so blessed… so thankful” to be appearing on the ABC serial. “[It's] a HUGE dream of mine.”