Ready for Christmas!

Mariah Carey, 45, shared a festive photo of four-year-old twins Moroccan and Monroe writing letters to Santa — and we love their bedazzled envelopes!

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#letterstosanta

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The notorious diva reportedly fell ill with the flu earlier in the week, but she seems to be on the mend after a busy few days promoting her new children's book, All I Want for Christmas Is You, and her Hallmark Channel movie, A Christmas Melody.

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The whole family recently spent Thanksgiving together, and were even joined by Mariah's ex, Nick Cannon, 35, who continues to be on good terms with the singer.

We bet Roc and Roe are on the nice list!

Scroll through to see more of the cutest celebrity kids!