Jon Bon JoviTV Towers hears that The X Factor contestants are getting ready to rock.

80s rock legends Bon Jovi have signed up to appear on next week's show.

As well as performing their new single, We Weren't Born to Follow, the group will mentor the contestants who will be challenged to sing some of Bon Jovi's greatest hits.

This will prove a toughie for some of the contestants, who don't necessarily have the credentials to belt out a good rock song.

Will Lloyd be living on a prayer? Or will Rachel go out in a blaze of glory?

Of course, one wannabe will be keeping the faith.

A source told the Daily Mirror: "It should be a great week for Jamie Afro to show he is a rocker and it will be good to see some of the others like the twins or Lucie Jones outside of their comfort zone."

But Bon Jovi, who will be joined by 2008 runners up JLS for their appearance on Sun 1 Nov, aren't the only big name act on the horizon.

Rumour has it that X Factor bosses have signed up Shakira for a guest spot and are in talks with kooky songstress Lady Gaga.

"X Factor have given fans Robbie Williams and Whitney Houston," added the insider. "Now with Bon Jovi, Shakira and all being well, Lady Gaga, it will make it the best series yet for big name acts."

This week, Michael Buble will appear with Westlife to teach the contestants a thing or two about swing ahead of Big Band week.

Find out when The X Factor is on TV.