It's elementary - let's have Holmes's coat Sherlock Holmes reignites a fashion for classic tweed coats. The prospect of spending the next six months listening to all the new Sherlock buffs painstakingly - and volubly - elucidating how he faked his suicide, is clearly tremendously scintillating to one and all. But a far greater mystery, surely, is why the BBC hasn't put Sherlock's lovely, swishy, swaggery, tweed coat into production? Belstaff, who made the original, say they are not producing any more for the foreseeable future and there's only one left in store. Hello? Are they insane? Zillions of men and women would kill for one, especially now the weather's finally on the turn. Think what a cult the Withnail tweed coat became and mark my words if the same doesn't happen to the Holmesian version. Dolce & Gabbana's and Ermenegildo Zegna's catwalk shows this week had clearly ransacked the sleuth's closets, and Ralph Lauren can't be far behind. A look from Ermenigildo Zegna's autumn/winter 2012 collection PHOTO: ZEGNA If the Milanese are already on the case, then national pride is clearly at stake. Blue Peter badges, Crackerjack pencils and designer Pudseys were all very well 30 years ago, but they don't cut it now. The Beeb needs to get with the programme - or programmes - and start planning some profitable fashion spin-offs. What with Miss Havisham nighties, Brucie's tuxedos, Attenborough's chinos and Dot Cotton's mac, they could have a comprehensive collection that frees them forever from the licence-fee dependency culture. Madonna at the premiere of her new film W.E PHOTO: REX God bless the speed of fashion. For decades it can seem to be stuck in a deep rut covered over with a grille to which only Moriarty has the key. Then, wham, a revolution happens. Last Friday, Madonna wore red driving gloves to the premier of W.E., and the world tittered while typing Old Lady Hands into Google. This week, Karl Lagerfeld, a keen glove wearer, announced the launch of a version of his fingerless gloves on net-a-porter.com. Lo, the decorative glove, which hasn't been this high on the fashion agenda since Medieval nobles flung gauntlets on the floor, is about to have a major moment.