Six Items or Less is an experiment with no driving force (no, really, the people who started it have no idea what it is exactly), but it can be a memorable experience for anyone who participates.  People who are willing to take part in the experiment pick six items of clothing to wear for a month and then they share their experiences on the website. Perhaps they’ll realize that they don’t need that much clothing, but I think fashion and design-related blogs would make that difficult.