Los Angeles is one of the cities closely tied to the fashion world, and although the area in the city known as the Fashion District is largely catering to the industry it's also a tourist attraction that's partly open to the public.
LA's Fashion District is a hive of design activity – more than 100 blocks where fabric makers and wholesale clothing distributors occupying huge warehouses. These places don't sell to the general public, but there are some retail businesses in the neighborhood – and even some that are typically only open to the industry have special sale days once each month during which they sell off samples.
Inside the boundaries of the Fashion District are two popular tourist areas. The Los Angeles Flower District, where you'll find hundreds of wholesale flower shops (even if you're not shopping, it's gorgeous scenery); and Santee Alley, a bustling pedestrian street lined with shops that's known for its bargains.
The Los Angeles Fashion District covers 100 blocks roughly from the Santa Monica Freeway to 6th Street, and Broadway to Stanford. Stores are grouped by product, so it's a good idea to get a map so you can focus on the things you want to buy. The sample sales occur on the last Friday of every month from roughly 9am-3pm in the designer showrooms.