The 'Masked Singer' host and 'All I Want for Christmas Is You' singer were married for six years before splitting in 2014

On Tuesday, clips from Mariah’s concert shows her stopping the show to say hello to Rihanna, who says almost immediately that she wants Carey’s signature. After locating a Sharpie, Rihanna tells Carey, "Sign my tit, because my man made me get you."

Nick Cannon has shown his approval for a viral moment that involved Mariah Carey, and Rihanna during a recent concert in New York.

Mariah Carey's ex-spouse Nick Cannon finds the viral autograph moment 'hot'. Impressed by the Christmas queen's bold move of signing Rihanna's breasts during New York concert, Cannon shared his two cents.

Mariah Carey and Nick Cannon’s twins Monroe and Moroccan took the stage to present their mom with a sweet gift in honor of her song “All I Want For Christmas Is You.”

For Mariah Carey, it’s always work, work, work, work, work. But this time, the singer, 55, had a special guest. Rihanna made an appearance during the final stop of Carey’s Christmas Time tour at the Barclays Center in New York City on Tuesday, Dec. 17.

Nick Cannon and Mariah Carey were married for six years, from 2008 to 2014, and share 13-year-old twins, Moroccan and Monroe. Despite their divorce, they maintain a supportive co-parenting relationship.