J'adore

Right now i'm really loving cardigan clips.  It's very 50's.  Etsy has a wide variety of new and vintage ones.

These would be great with drapey cardigans that don't have closures as well as more structured ones.

http://www.etsy.com/search_results.php?search_query=cardigan+clip&search_type=all&shopname=AmbivalentRelics&page=1