Ariana Grande, Katy Perry and others paid tribute to Carey's hit. Mariah Carey has given the gift that keeps on giving with her Christmas classic, "All I Want for Christmas Is You." On Monday, she ...

Katy Perry recently made her love for the one and only Mariah Carey known, taking in one of the 45-year-old legend's shows at Caesars Palace in Las Vegas. Mariah's currently doing her first-ever ...