Though you may never have heard of such a thing, these are also borrowed from times past. Originally, the purpose of detachable collars, was versatility. Add a fancy crochet or lace collar to a day dress or sweater, and you can wear it for an evening out, and appear as though you have put on a whole other outfit! This was useful when times were tough, and appearances mattered. Today, the detachable collar has a different use. Really, it is worn as a necklace of sorts, and has become an accessory rather than a necessity. And so, the wearer need not worry about its fitting perfectly around the collar of their shirt, but may revel in its stark detachability! A detachable collar is the fastest way to update any outfit.