Mariah vs Sabrina CHRISTMAS CLAWFEST!

It's yet to be determined if music’s reigning pop princess, Sabrina Carpenter, will be placed on Santa’s naughty or nice list this festive season, with all the celebrity arrests she’s been making on her current world tour.

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But in the meantime, the pint-sized singer has already cemented her place at the top of another list — Mariah Carey's personal blacklist.

Indeed, sources tell New Idea that Mariah, 56, is determined to hold onto her crown as the queen of Christmas. However, this year she is facing stiff competition in the form of Sabrina — and it is stressing her out to no end!

“This is hands down Mariah's season. There are very few modern Christmas songs that even come close to the universal appeal of ‘All I Want for Christmas Is You’,” dishes our exclusive insider.