The powerhouse singer will take in two concerts in the UK in December – one in Manchester and the other in London.
She’ll be at the Manchester Arena on Sunday, December 10; before heading to London’s huge O2 Arena the following day; Monday, December 11.
Princes are pending confirmation, but they’ll be known soon enough – as presale tickets are out tomorrow, September 5, at 9am.
General sale then begins on Friday, September 8, at 9am.
The two shows are marked as Mariah’s only European dates of the jaunt.
Mariah is also capitalising on the song’s success with a new animated movie, due in a few months’ time.
The motion picture, which takes its cues from a kids’ book of the same name, will also feature the lady herself in a voice role.
Michelle Bonilla, Ali Eagle, Rachel Eggleston and Laya DeLeon Hayes are also listed on IMDb as being in the cast.
All I Want For Christmas Is You was first released in November 1994 and in 2013 it was estimated to have earned upwards of $50 million in royalties.
Its global sales are estimated to have topped 16 million copies; making it one of the best-sellers in modern music history.
Its parent album, Merry Christmas, is the best-selling Christmas album of all time.