Arlene Phillips is being replaced on Strictly Come Dancing by Alesha Dixon, who won the show in 2007.
Alesha will be taking her seat on the judges' bench beside the others when the show returns this autumn.
She said: "I'm honoured and excited to be joining the judging panel. I've always felt like part of the Strictly family and really believe in the show."
Arlene isn't completely leaving Strictly, as she's going to be The One Show's Strictly expert this autumn.
Alesha will start as a judge in autumn
And a guest judge, ballet dancer Darcy Bussell, was also announced.
The show's producers say she's part of a series of changes to Strictly, which will be revealed soon.