Thanks for the suggestions everyone, I had been wondering the same thing! However, I've heard that it is better NOT to wear black because most of the sisters wear black, and a PNM would be more likely to stand out. I'm posting a few links, please tell me which one (if any) would be the most appropriate. (Semi-competitive ACC school).
http://www.dillards.com/webapp/wcs/s...925&R=03301251
http://shop.nordstrom.com/S/3113301/...bo=6020250&P=6
http://www.dillards.com/webapp/wcs/s...098&R=03292181
Also, would a pink Lilly Pulitzer Carly dress (the one that was in-store only) with ruffles and the white beading be formal enough? Or should I wear that to skit night (night before bid night). Or a less formal Lilly?