Chris Brown got a visit from Santa’s little helper on Christmas Eve.

The “Post to Be” singer shared an Instagram photo of his 5-year-old daughter Royalty changing her baby brother Aeko Catori’s diaper on Tuesday.

“BIG SIS CHANGING DIAPERS ❤️❤️❤️❤️❤️,” Brown, 30, captioned the pic.

Royalty wore a festive Christmas sweater and a tiny tiara as she helped take care of her half-brother, who stared into the camera wide-eyed sucking on pacifier.

Brown and ex Ammika Harris welcomed Aeko Catori, their first child together, in early December.

He shares daughter Royalty with ex Nia Guzman.