Dee Whitaker left Rigg's Street, blazing with dazzling light as she turned on the famous Christmas lights.
Crowds gathered to see the first doctor to hit the switch to activate the grand display of London's famous shopping street.
She was on the side of the radio Jamie Thexton and Sian Wolby as she prepared to press the switch.
She was joined by West End's musical actors Dreamgirls who performed several songs from the successful show before the replacement. They were followed by Kallam Scott.
Rig Street was closed for traffic and its shops were closed later than usual to celebrate the event.