Demi Lovato: 'X Factor' Viewing Party!

Demi Lovato attends a viewing party to celebrate the top four on The X Factor at Mixology on Thursday (December 6) in West Hollywood, Calif.

The 20-year-old entertainer posed with fellow judge Simon Cowell while holding up bunny ears behind his head as a cute joke.

PHOTOS: Check out the latest pics of Demi Lovato

The top four X Factor contestants Tate Stevens, Carly Rose Sonenclar, Emblem3, and Fifth Harmony were also in attendance, as well as fellow judge Britney Spears!

In case you missed it, check out Demi‘s newest tattoo now!