Demi Lovato & Nick Jonas Bring The 'Future Now' Tour To Jingle Ball 2015 in Oakland

Demi Lovato closes out the show at WiLD 94.9′s FM’s Jingle Ball 2015 held at ORACLE Arena on Thursday night (December 3) in Oakland, Calif.

The 23-year-old “Confident” singer was joined on stage by her Future Now tour mate Nick Jonas.

Demi and Alessia Cara were even spotted backstage watching Nick perform during his set!

PHOTOS: Check out the latest pics of Demi Lovato

DNCE — made up of Joe Jonas, JinJoo Lee, Cole Whittle and Jack Lawless — also hit the stage to perform their hit, “Cake By The Ocean”.

Check out 60+ pics from the show below!