Mariah Carey's twins sing back-up at her Christmas show
Monroe and Moroccan joined their mom Mariah Carey on stage to sing backing vocals.
Mariah Carey had two very special guests singing back-up vocals at her 'All I Want For Christmas Is You' concert in New York City on Tuesday.
Her children, Moroccan and Monroe, performed alongside their mother on the final day of her show at the Beacon Theatre.
The six-year-old twins helped Mariah sing 'The Star' during their appearance.
Roc and Roe looked comfortable on stage, and appear to be naturals just like their mom.
Mariah's back-up dancer boyfriend Bryan Tanaka also joined her on stage.
The couple, who have known each other for ten years, started dating in 2016.