The latest artist announced as a performer on next week's finale of The Voice wasn't too difficult for the show to book: it's coach Christina Aguilera.

Christina, who took a year off from the big red chairs this season, will return to the NBC show's stage for the big finale on June 18.  She'll be performing "Feel This Moment," her collaboration with Pitbull.

In addition, Bruno Mars will appear on The Voice finale to perform his latest single, "Treasure." Bruno pre-taped his performance last month, before his mother suddenly passed away from a brain aneurysm, so this won't be his return to live performance since the tragedy.

Also on the bill for the finale: Florida Georgia Line and Nelly, who'll team up to perform their hit remix of "Cruise," and legendary diva Cher.  She and Christina already know each other, of course, having co-starred in the movie Burlesque a few years back.