Mariah in a Santa suit

Mariah Carey is getting ready to put on her Santa suit a month early, as she has been chosen to switch on London’s glittering Christmas lights.'

Mariah Carey is getting ready to put on her Santa suit a month early, as she has been chosen to switch on London’s glittering Christmas lights.'

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Carey will flick the switch at the U.K. capital’s Westfield Shopping Centre later this month. And she is preparing for her role by looking at videos from her festive hits All I Want For Christmas and Santa Baby so she can stage a dramatic entrance.