It's the first official episode of Strictly Come Dancing tonight, where we finally get to see those celebs take to the dancefloor with their professional partners to show what they've learned in the past fortnight since the launch show. The series welcomes new judge 'Queen of Latin' Shirley Ballas in place of Len Goodman, while regular panelists Bruno Tonioli, Craig Revel Horwood and Darcey Bussell return. None of the 15 stars taking to the dance floor this weekend will be exiting this week though. Instead, their scores will carry over to next weekend, when viewers get a chance to vote for their favourite couples.