I'm a big fan of best friends and accessories, so of course I love best friend jewelry. Matching bracelets or necklaces are a fun throwback to elementary school style, and today we have options far beyond that classic broken heart necklace. These hand-painted bookshelf pendants, for example, look adorable separately but only form a full bookshelf when put together. Smart, huh? Click through for more cute ways to show some BFF pride ... all of which are sold as a set of two (naturally). [Bookshelf Necklaces, $58, Etsy]