Tess Daly and Claudia Winkleman launch another series of the celebrity dance contest, pairing up the 15 celebrities with their professional dance partners. 2016 champions Joanne and Ore return to perform their winning jive to show, and there are also performances from Shania Twain and Rita Ora. The celebrities take to the floor for their first group dance, and Strictly pays tribute to Sir Bruce Forsyth.