In a video posted to social media, Rihanna invites Carey to sign her boob with a red pen.
What do you want me to write?
Carey says in the clip.
Mariah Carey performs her Christmas Time show in Houston.Karen Warren/Houston Chronicle via Getty Images
Mariah, Rihanna replies.
What the fuck do you think?
Wow, this iconic.
She then takes the microphone and announces, Mariah Carey is signing my tit, yall.
Rihanna is in the audience and catches Mariahs attention.
Amazing finale Christmas show at Barclays in Brooklyn!
She canceled her Dec. 11 gig in Pittsburgh just hours before the concert was set to begin.
It breaks my heart that I unfortunately have to cancel tonights show.
I love you all so much.
Some fans, however, didnt learn about the last-minute cancelation until they arrived at Pittsburghs PPG Paints Arena.
Lambs, thank you for making my#Christmastimeso special , shewrote on Instagram.
