Katy Perry

Has Katy joined the cast of The Rocky Horror Picture Show?! This is a stage outfit so all is forgiven but the controversy was not so much to do with her space odyssey outfit. The singer caused a stir with her less than subtle break -up song, Part of Me, which she debuted at the show. As she belted out lines like,  'your love was cheap, was always tearing at the seams, I fell deep, you let me drown, but that was then, and this is now' and 'keep your diamond ring', we couldn't help wonder what went so badly wrong in her marriage? So much for that oh-so-karmic honeymoon in India! 

Corinne Bailey Rae

Yikes! Not only is Corinne's dress Flamenco inspired, but her hair appears to be as well! Too much movement, too many ruffles, too much everything - and she's standing still! 

Cyndi Lauper

We know Girls Just Wanna Have Fun, but does it have to involve dressing up as a True Blood reject? Vampish can only look good if it's done elegantly, this is outfit is sucking the life out of sexy, and much as Cyndi deserves praise for her immense musical talent, she's still breaking the cleavage/leg rule!

David Guetta and Wife Cathy Guetta

Paris's 'It' couple pose in studs and leather. Cathy's all-in-one biker outfit must have been murder to wear under all the hot spotlights, we dread to think how she looked (and sounded) in motion, really sticky and swishy! Love the Chanel bag, hate the banana split shoes. David looks like he belongs in One Direction.

Katy Perry (again)

We know that Katy is going through a 'break-over' at the moment, which explains the blue hair, but her style has definitely plummeted since her split with Russell. This dress ages her, the cut and the colour just don't work and the design is far too fussy (also, is it us or does the pattern look a bit like mould?!) 

Nicki Minaj

Only Nicki could come as Versace's Red Riding Hood and pull it off with slightly evil panache. Who's afraid of the Big Bad Wolf? Not us. But we are a little scared of Nicki!

Robyn

Swedish pop princess, Robyn, is like a New Gen Bjork when it comes to dressing up. Confidence and cool are the only two words that register with her, so you never know what to expect. We're not sure what to make of the bizarre skirt and Munster shoes, but she looks really chuffed with herself, so we can only admire her for it!

Stacy Ferguson from the Black Eyes Peas

An amazing figure like Stacy's deserves to be shown off, but not in a cascade of neon orange lace. In fact we can't think of anything on this planet that should be burdened with this toxic coating!