I don't think they should have put the no crossdressing part in with the "dress professionally, no saggy jeans" part - IMO they are two very different issues and people are doing them for two very different reasons. Plopping them all in the same code just muddies the waters about why this is being done.
DS - you asked about men's-style clothing. I don't know how Spelman could say no to it since it's become pretty culturally accepted. Vogue and other magazines have featured women in suits and fedoras - or grungy flannel & Docs - but I've never seen GQ do a housedress layout.
And FWIW, I would totally wear a strand of pearls to a club with beat up jeans and motorcycle boots, because I'm a punk like that.
