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."

Bre Tiesi recently got candid about her unconventional relationship with Nick Cannon. Despite Cannon's sprawling family, which includes 11 children with six different women, Tiesi insists that their open relationship is actually the "healthiest" one she's ever had.

Nick Cannon Says Mariah Carey Signing Rihanna’s Breast Was ‘Hot’ | TMZ Nick Cannon was in the house to see his ex-wife Mariah Carey leave her mark on Rihanna's breast ... and he says more women should follow their lead.