Is X the new Y?

    Megan Fox is expected to replace Victoria Beckham as Armani's highest profile model after Posh reportedly opted not to renew her contract.

    But Posh won't be grumbling, as she's secured a trial run replacing Paula Abdul as a judge on American Idol. Whether she can replicate Paula's bizarre behaviour is yet to be seen.

    Megan is also clearly gunning for Angelina Jolie's position as the sexiest leading lady in Hollywood. Long brunette hair? Check. Luscious lips? Check. Suggestions of bisexuality? Check.

    Many High School Musical fans are getting older and want something a bit more edgy than Zac Efron. Enter Robert Pattinson and teeny-vampire flick Twilight.

    One's a saucy pop star famed for her controversial and ridiculous outfits and tendency to run off at the mouth. The other is the same but without the tunes. Lady Gaga is almost the new Madonna.

    Now that Lindsay Lohan seems to be getting her act together a bit, the world needs a new former teen actress who has become more famous for knowing how to par-tay than for her roles. Mischa Barton fits the bill.

    Former Hollyoaks star and Celebrity Love Island sex pest Paul Danan may have given up the showbiz life to become a recruitment consultant, but Jack Tweed was ready to step straight into his shoes on the party circuit.

    Both are elegant, stylish, have an understated beauty and are very, very rich actresses, but only time will tell if Emma Watson's awards acceptance speeches could be as cringe-worthy as Kate Winslet's.

    Just 12 months ago Peaches Geldof was almost ubiquitous in the celeb gossip columns, thanks to her big gob and hectic lifestyle - but now younger sister Peaches seems to have eclipsed her on the showbiz editors' radar.

    They may be a couple of generations apart, but we reckon blonde-haired party girl Sarah Harding is the spiritual successor to blonde-haired party girl Babs Windsor - especially now the Girls Aloud star has turned her hand to acting.