To me that's just really bad customer service. The customer is PAYING for the flight. They have the right to wear whatever the hell they want, as far as I'm concerned. What Southwest should have done was offered her an alternative--if they didn't want her on their plane, they should have found her another flight instead of just kicking her off. That's not only rude, it's bad business.
This woman has friends and family--and she obviously contacted all the right news organizations. I saw this on Headline News, the local news, and in the paper. I can guarantee that people offended by Southwest's practices in this case will not be flying with Southwest again. They have damaged their reputation with customers--and they leave customers asking themselves when they fly Southwest--"Am I going to get kicked off my flight for offending another passenger?"
Of course, some of us already knew that their customer service was shitty...I would never fly Southwest in the first place