At the end of every season, some of the city's most heavy hitting boutiques come together for what is not merely a sale but an event. If you only shop for clothing once or twice a year, now is an excellent time to do so, because prices will be slashed up to 80%. It's called the PDX Collective Sale, and it's taking over the Ace Hotel's Cleaners next weekend with men's and women's clothing, shoes, and accessories. Go early, and play nice.