It has become a familiar sight in London, the erection of the enormous marquee that hosts Burberry's grandiose Fashion Week shows twice a year in Kensington Gardens. For a single afternoon every six months or so, that spot just below the steps of the Albert Memorial boasts the much- vied-for, most-A-listers-per-square-foot title as one of the world's most famous names shows off its wares to press and buyers, pundits and brand die-hards.