Last night it was leaked that Madonna and Robbie Williams are planned guests for the X Factor live show this year. Brian Freidman, the shows lead choreographer, let slip that the two superstars were set to mentor contestants and perform live during the final stage of the competition.

X Factor is set to be bigger than ever this year as V-necked Simon Cowell pulls no punches in the fight against rival BBC show Strictly Come Dancing. The rivalry between the two shows in recent years has been one of the strongest on television, with X Factor winning last years battle with a 14 million viewership for its final as opposed to Strictly’s 12.6 million.

It is believed that these big-name stars, in addition to a strong rumour regarding a possible appearance by Whitney Houston and Rihanna, are a response to Strictly’s recent scrapping of their Sunday show. This change brings the BBC show in more direct competition with the ITV show because the extended show will be longer, with a similar duration to its rival.

The X Factor have recently completed filming of its second stage, the bootcamp, and the four judges are currently choosing which of their hopefuls will make it to the third and final live stage. During filming, the X Factor have made use of several of Limo Broker’s vehicles, including the classic Lincoln Towncar and, Simon’s favourite,  the 8-wheel Hummer H2. The public will have to wait a while to see these in action because the X Factor starts again on August 22 with Strictly Come Dancing starting later, in early September.