The word "luxury" has almost lost its meaning. Once used to describe genuinely prestigious products or places, the concept of luxury has been hijacked by a multitude of aspiring or overpriced commodities, from foot spas to chocolates. So what is real luxury? Which are the genuine luxury brands, and how have they reacted to the rise of the "mass luxury" sector? What strategies do they use to lift themselves into the realm of the truly elite?...