Singer Paloma Firth turned on the Christmas lights with the help of a clean robber, marking the beginning of Regent Street festival.
Before turning on the lights in one of London's busiest shopping streets, she appeared on stage in sequined gowns to perform for fans.
Clean bandits also carry out and help turn on the lights.
For the second year in a row, the dazzling decoration presents the theme of "Christmas Spirit".
The display includes 300,000 light-emitting diode lamps.
In 1954, Regent Street was the first street to introduce Christmas lights to the West Side.
Since 6 p. m. , the street has been closed to traffic, so people can gather together to watch the show and see the lights turn on.
Michael Bauer and Alfie Boy perform to bring revellers into the Christmas atmosphere.
This year's exhibition is one of the largest in the capital.
In addition to celebrity performances and dazzling lights, street stores stay open late, and tourists are given exclusive discounts and surprises.