This season, however, big sunglasses are the height of cool for everybody - whether or not you're a celebrity. Designs are bigger than ever, with Chips-style aviators from Valentino (loved by Liz Hurley), huge "upsidedown" shades from Roberto Cavalli, mirrored wrap-arounds by Dolce & Gabbana, and grandiose black shades from Chanel. High street outlets are following suit. Aviators are moving fast at Topshop and cool white Perspex ski versions are selling at Miss Sixty.