It's been rumoured for a while, but Tiffany Pollard is now officially back on Big Brother, with the legendary housemate now confirmed to have entered the iconic house as part of a major comeback.In a post, which included a photo of the star, via the show's official social media channels, a caption read: "The HBIC is in town! Tiffany Pollard has entered the Big Brother House. Break a leg."