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She is the undisputed Queen of Christmas.
And Mariah Carey is in the running to rule Halloween too with the scorching couples costume she posted on Wednesday.
Diva - Nurse - Boyfriend - Bryan - Tanaka
The 49-year-old diva looked ravishing as a sexy nurse, while 35-year-old boyfriend Bryan Tanaka made an equally sexy doctor.
The songstress showed off her killer bosom in silver lingerie beneath a plunging white nurses tunic, accessorizing with a racy red stethoscope.
Bubblegum - Pink - Wig - Ensemble - Nurse
She donned a bubblegum pink wig, giving the ensemble a Nurse Joy from Pokemon vibe.
Her handsome dancer beau meanwhile left his white doctor's coat open to show off his ripped torso, adding a headlamp, syringes and a stethoscope of his own.
Tokyo - HappyHalloween - Mariah - Tour - Asia
'Keeping it festive in Tokyo! #HappyHalloween,' wrote Mariah, who is currently on tour in Asia.
She was not, of course, the only star to dress up for the day that was in it.
Ellen - DeGeneres - Costume - Instagram - Bachelor
Ellen DeGeneres shared her costume on Instagram as she was dressed up as a Bachelor contestant named Kelllly complete with blonde wig and fake chest.
And the man who played the dashing Bachelor in a dark suit was This Is Us star Milo Ventimiglia.
Kylie - Jenner - Khloe - Kardashian - Heidi
Kylie Jenner, Khloe Kardashian, Heidi Klum and Nicole Kidman also had fun in costimes.
Kelllly is from the 'most dramatic and most drunk episode of'The Bachelor,' said Ellen.
Kelly - Show - Season - Kelllly - D
'There are six other Kelly's on the show so this season you can call me Kelllly D,' Ellen said. 'That's not...
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