Demi Lovato

Oh no! Demi Lovato was rushed to the emergency room yesterday (Feb. 24) and has been hospitalized for a lung infection.

See Miley Cyrus, Lea Michele, Jimmy Fallon, Demi Lovato + more celebs' audition tapes before they were famous.

The 'American Idol' finale celebrated the conclusion of its 13th season by inviting big stars onto its stage to perform alongside the former contestants and two finalists. Check out performances by Demi Lovato, Paramore, Phillip Phillips and more.

Demi Lovato is feeling more confident than ever! The singer showed off her gorgeous, bikini-clad figure in a shot she shared with fans on both Instagram and Twitter.

Demi Lovato pretty much stole the entire show at the 2013 MuchMusic Video Awards on Sunday (June 16), performing her 2012 smash 'Give Your Heart a Break' and her latest hit single 'Heart Attack.' The songstress showed off her strong vocals and stage presence, interacting with her fans as she belted the "coronary" duo of choruses.

It has been confirmed that former 'X Factor' judge Demi Lovato will be returning to the show for its third season, joined by creator Simon Cowell -- but not by her former panelists Britney Spears and L.A. Reid. The fates of co-host Khloe Kardashian and her nipples are currently unknown. (Oh let's be real here. She won't be back.)