Bigg Boss fans, get ready to celebrate Christmas in style! The sizzling couple from the upcoming thriller, Alone, – Karan Singh Grover and Bipasha Basu – are set to appear on the reality show! Check out the preview below! As the clip reveals, things are sure to get sexier in the house! Karan and Bipasha are co-stars in the thriller Alone! There is no doubt the TRPs of the show will shoot up with this episode!