Is mixing jewelry (ie: gold and silver) ever okay?
I've always heard this is a major fashion faux paux, but I was watching The Hills the other day and (omg, this sounds so ditzy...lol) Heidi was wearing pearl studs with a silver necklace. Not that Heidi from The Hills is a picture of "fashion perfection" or anything (haha), but it got me wondering. My friend always wears silver rings that she never takes off with a golf necklace she never takes off. Of course you can wear what you want, but I was always taught this was a little tacky (especially those x-and-o bracelets that mix silver and gold...whew. I hate those.) If you were to follow those "unwritten rules of fashion", is it ever okay to mix jewelry? Can you wear gold with silver, pearls with gold or silver, etc? Maybe I'm just a little old fashioned? Just wondering! 
*faux pas* 