I actually wrote a post with similar sentiments a while back - "Being a Girl in CS Doesn't Suck": http://blog.pamelafox.org/2009/10/being-girl-in-cs-doesnt-su...

As for the casual attire, I think it goes both ways. I'm totally into casual most of the times (to the point of wearing my head-to-toe footed pajamas to work), but then the days when I want to dress up or wear a mini-skirt or whatever, I feel like I'm standing out a bit too much and wish I was in the pop music industry instead. But alas, I have no singing talent and no autotune device, so back to coding I go.