Guess who turned up at Mariah Carey's Las Vegas gig

Mariah Carey's Las Vegas show turned a bit exciting when funnyman Will Ferrell visited her gig, Mariah #1 to Infinity, at Caesar's Palace.

Sharing details about Ferrell's 'visit, the 45-year-old singer flooded her Instagram page with pictures, showing both of them having a whale of a time along with several crew members and actor's wife, Viveca Paulin, on her show, E! Online reports.

Sharing a snap, wherein the 'Obsessed' hit-maker is seen standing with Ferrell, she wrote, "Shake and bake!! Thank you for coming to my show last night!! #elf forever!!"

Additionally, Carey posted a pic wiping the face of her guest captioning it as, "MC #beautyschooldropout gives #willferrell a touch up."

Notably, the singer looked stunning in a strapless, gold, glittering gown, while the 48-year-old actor looked dapper in a black tux.

Carey, who kicked off her Las Vegas concert residency last May, will be back to the city for more shows in June.