Demi Lovato & Olly Murs Have No Where To Go But 'Up' at X Factor UK Finals

Demi Lovato and Olly Murs pose backstage just before their performance at the 2014 X Factor UK Finals in London, England on Sunday night (December 14).

The 30- and 22-year-old singers lit up the stage with their new duet, “Up”.

PHOTOS: Check out the latest pics of Demi Lovato

“Just finished doing @TheXFactor with this beauty!” Olly captioned with a cute snap of the duo on Twitter.

Before their performance, Olly and Demi got in a big Christmas sweater with One Direction‘s Niall Horan and Sam Smith.

Watch their performance below!