Summer: wrong
Kelly Brook appeared at the Cartier Polo this summer in a jumpsuit with matching crimson belt, collar and gloves Photograph: Richard Young/Rex Features
She arrived at the after-party of Fat Pig perfectly turned out in a Suzie Turner gold floor-length gown Photograph: Dave M Benett/Getty
Summer: wrong
Matthew McConaughey appeared at the premiere of the film Tropic Thunder in Los Angeles in an olive shirt, brown trousers and white trainers Photograph: Gregg DeGuire/Getty
He looks infinitely better in a sharp suit Photograph: Venturelli/Getty
Winter: good
Lily Allen looks great with dark hair and wintery animal prints Photograph: Dave M Benett/Getty
They beat her summer look of pink hair and matching frocks hands down Photograph: Mike Marsland/Getty
Summer: good
Sienna Miller is the original summer style pixie, whose hips have launched a thousand gypsy skirts Photograph: Mark Davis/Getty
Her lapses are admittedly few and far between, but they tend to occur in winter and usually involve a severely misjudged bowler hat Photograph: Gareth Cattermole/Getty
Winter: bad
Keira Knightley has a penchant for beanies inspired by giant Smurfs Photograph: MJ Kim/Getty
Winter: bad
While Ronnie Wood inexplicably plumps for Ugg boots Photograph: Rex Features
