Katy Perry

“I’ve got boobs and I’m not going to chop them off, so I guess people will always talk about them,” she has previously remarked. Which is precisely what has happened throughout Katy Perry's career - including famously getting her scenes cut when she performed a riotous sing-a-long with show favourite Elmo on Sesame Street . Too much boob, not enough learnin according to some concerned parents.

Katy Perry's place as one of pop’s hottest faces is assured. Debut album One Of The Boys sold over a million copies, as did follow-up Teenage Dream and, with saucily attired live performances regularly playing to sell-out crowds, her success shows no sign of slowing down.

Then, of course, there’s Brand. When Katy Perry and the Dickensian wit appeared in public as a couple, some people called it a marriage of convenience. But we liked to think it was love - we’re old fashioned like that. Turns out, it didn’t work for whatever reasons, so the couple have separated. Sads. But Perry will survive - while Brand was gallivanting around with his new girlfriend, she released Part of Me, a breakup ballad that doesn't so much vilify him as big up herself. Oh, and she joins the Marines in the video, too. Not sure what to make of that.

Megan Fox

Megan Fox surely can't be human, because there is no woman alive who could have looked as good she did bent over a 1976 Chevrolet Camaro in Transformers. Well, except Rosie Huntington-Whiteley perhaps, who the character of Micheala Banes has transformed into for Michael Bay's big robot epic threequel.

But that doesn't matter because she launched her career out of nowhere and landed at the forefront of every teenage boy's dreams, after two very jiggly performances in Transformers and Transformers 2, so we're sure she can claw her way back to the top.

Aside from her time spent being chased by Hasbro merchandise, Megan has starred in Jennifer's Body - basically an excuse to dress her as a cheerleader and pan over her body. The other thing synonymous with Jennifer's Body was the leaked pictures Megan Fox emerging from a lake, soaking wet with no clothes on and just her nipples covered.

Recently she has appeared in comic book adaptation Jonah Hex, where she plays a gun totting prostitute and has also replaced Victoria Beckham as the body for Armani underwear.

Sadly, this FHM favourite married her long time on/off boyfriend Brian Austin Greene in 2010 at a secret wedding. But forget her marriage, because Megan Fox’s greatest achievement to date has to be her number one slot as FHM Sexiest Woman In The World 2008.