Rihanna was out in London to turn on the Christmas lights at Westfield shopping centre, to mark the beginning of the festive season.
Thousands of screaming fans showed up to try to catch a glimpse of the singing superstar.
She was joined by children from charity Help a London Child, as she counted down the time to switch on the lights. 5...4...3...
...2...1...GO! Rihanna cheered when the lights came on and posted 'It's BANANAS in here!' online.
During the show Rihanna said she's a big fan of London and wants a house in the capital!
The 22-year-old also said she loves Christmas time, especially wrapping up presents for her family and friends!