Demi Lovato: Happy Birthday, Miley!

Demi Lovato shows her support for her friend Miley Cyrus by going to her Sweet 16 Birthday Celebration held at Disneyland in Anaheim, Calif., on Sunday.

The 16-year-old Camp Rock star has a new TV show called Sonny With a Chance, and is set to air in February or March 2009. The show is a “fish-out-of-water” comedy in which she plays a Wisconsin teen who moves to L.A. when she’s cast in her favorite sketch comedy show for kids and tweens.

Last week, it was reported that Lovato‘s solo recording debut album, Don’t Forget, debuted at # 2 on the Billboard Top 200, selling 88,973 units.