Maria Carey accused Alison Hammond of "mocking" her after the TV presenter belted out a Christmas song during an interview on This Morning.
Hammond asked the pop icon, famed for her festive classic All I Want for Christmas Is You, if she would mind her singing a Christmas song, and Carey deadpanned: "I would ask you to keep it to yourself."
Undeterred, the TV presenter said: "You don't have to look at me through it because it's a bit intimidating" before bursting into song.
Carey looked less than impressed.
"Are you mocking me, Alison, after I made this card for you and everything?" she quipped.
Viewers took to social media to heap praise on the English TV presenter for the hilarious moment.
Alison Hammond singing 'Merry Christmas' infront of Mariah Carey and Mariah saying ‘Are you mocking me?’ is iconic #thismorning— ★ ANASTAZIA ★ (@__Anastazia__) December 12, 2019
I bloody love Alison Hammond...someone should give her, her own show!!— Sally Carlile (@sally_carlile) December 12, 2019
Alison Hammond is fantastic. She literally has me in stitches. Merry Christmas Alison and everyone at This Morning.— lisa calverley (@LisaCalverley) December 12, 2019