Not everything you buy has to be new—vintage-lovers already know this—and some of the best gems in your closet can be from a second-hand store. If you're not familiar with thrifting, you might want to look into it this summer. Thrift stores this time of year aren't as popular with the fashion set, since sought-after flannels and American-made outerwear are back in storage. So, that means less crowds, and more racks that haven't been picked-over yet. Though the thought of looking for other people's old clothes sounds suspect, you'll be flooded with endorphins as soon as you find a vary rare piece that only you will have this summer. Don't be intimidated and shop second-hand pieces like an expert. Here's the Summer Thrift Shopping Style Guide.