I'm with everyone else too. I use chunky necklaces, big earrings, different sweaters and especially different colored camis underneath, vests, etc. I also have hair that's "dignified" enough to keep me from looking immature, but it's also different enough to add something to whatever I wear. I have some mulberry and plum highlights in my brown hair, and in addition to my blonde highlights and Julia Styles-esque cut, it keeps all my outfits from being too boring. Makeup can really make a difference too. Right now I use green, purple and brown according to the outfit. And finally, I have two pairs of glasses. I change them according to the look I want, and it works well.