KARL LAGERFELD is fond of a collaboration. In the past, the designer has partnered with H&M on a high street line, Shu Uemura on make-up, Melissa on jelly shoes and even LA-based brand Tokidoki on a mini statue of himself - to name but a few - but there are certain products that he'd draw the line at. "Toilet paper? Support stockings? Condoms?" he said, before jokingly adding: "But maybe. You know, I am mainstream. This exclusivity, it's old-fashioned. The product has to defend itself."