Singer Mel B is said to be too sick to judge the final of the reality show "The X Factor", and if sources are to be believed, ex-panelist Tulisa Contostavlos will be brought in. The grand finale will take place this weekend, reports dailystar.co.uk. Mel B's illness has been described by the show sources as "serious", with this weekend's extravaganza near "disaster". Quizzed about making a return to the show, Contostavlos said: "I couldn't say. I love 'X Factor' and Cheryl is great. I am good friends with her". (Source: IANS)