The original form of tartan, the kind that long ago was called " Helande ", was a fine, hard and almost showerproof cloth spun in Highland villages from the wool of the native sheep, dyed with preparations of local plants and with patterns woven by artist-weavers. It was worn as a huge single piece of cloth, or plaid , which was belted around the waist and draped over the upper body, rather like a knee-length toga. The natural colours of old tartans were clear but soft, and the broken pattern gave superb camouflage, unlike modern versions, where garish, clashing colours are often used to create impact.

The myth-makers were about four centuries ahead of themselves in dressing up the warriors of the film Braveheart in plaid: in fact tartan did not become popular in the Lowlands until the beginning of the eighteenth century, when it was adopted as the anti-Union badge of the Jacobites . After Culloden, a ban on the wearing of tartan in the Highlands lasted some 25 years; in that time it became a fondly held emblem for emigrant Highlanders in the colonies and was incorporated into the uniforms of the new Highland regiments in the British Army. Then Sir Walter Scott set to work glamourizing the clans, dressing George IV in a kilt (and, just as controversially, flesh-coloured tights) for his visit to Edinburgh in 1822. By the time Queen Victoria set the royal seal of approval on both the Highlands and tartan with her extended annual holidays at Balmoral, the concept of tartan as formal dress rather than rough Highland wear was assured.

Hand-in-hand with the gentrification of the kilt came "rules" about the correct form of attire and the idea that every clan had its own distinguishing tartan. To have the right to wear tartan, one had to belong, albeit remotely, to a clan, and so the way was paved for the "what's-my-tartan?" lists that appear in tartan picture books and souvenir shops. Great feats of genealogical gymnastics were performed in the concoction of these lists; where these left gaps, a more recent marketing phenomenon of themed tartans developed, with new patterns for different districts, companies and even football teams being produced.

Scotsmen today will commonly wear the kilt for weddings and other formal occasions; properly made kilts, however - comprising some four yards of 100-percent wool - are likely to set you back ?300 or more, with the rest of the regalia at least doubling that figure. If the contents of your sporran don't stretch that far, most places selling kilts will rent outfits on a daily basis. The best place to find better quality material is a recognized Highland outfitter rather than a souvenir shop: in Inverness, try the Scottish Kiltmaker Centre at Hector Russell's or Chisholms Kiltmakers at 47-51 Castle St.