Not long after having a glamorous hang out session with Beyoncé, Mariah Carey had a very special, very unexpected guest at her Las Vegas show on Friday night: Will Ferrell. The pop diva, who's performing her show "Mariah #1 to Infinity" at Caesar's Palace, looked like she was thrilled to be meeting the actor. She happily posed for photos with Will, writing, "Shake and bake!! Thank you for coming to my show last night!! #elf forever!!" The newly engaged singer also gave the Zoolander 2 actor a small touch-up with her makeup and got in a group shot with a few members of her crew and Will's wife, Viveca Paulin. Keep scrolling to see the pair's hilariously random interaction, and then check out Mariah's most adorable mom moments!
Mariah Carey and Will Ferrell Are the World's Most Unlikely BFFs
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