http://www.msnbc.msn.com/id/12958618/
Interestingly, the article mentions an organization in DC that fights for gender-neutral dress codes. I quote:
http://www.gpac.orgTyrone Hanley, the youth program coordinator for the Gender Public Advocacy Coalition in Washington, D.C., said he often sees cases like this and called it gender-based discrimination.
"Prohibiting really short skirts for everyone is a fair dress code; prohibiting them for males is not," he said.
A glance at the website, and it looks like we're on the right side of this curve. For example, the number of major corporations adopting official gender expression discrimination policies is skyrocketing --- from two adoption in 2000 to 41 coming onboard in 2005 alone!