From da office to da club?

Okay, other than my rant about common sense (which no one has commented on in the past 10 minutes), let's talk about appropriate work attire. What is "business casual" any way? Why have so many lawyers taken it to the far extreme? I often feel guilty for wearing the flip flops in the office lobby (which I walk to work in) while I wait for the elevator on which I will change into my heels, but what gives with the women who think that letting the twins hang out (I'm not talking about a hint of cleve, I'm talking about almost enough to breast feed) on a daily is appropriate? I recognize that, on occassion, almost everyone has a fashion misstep of sorts. That being said, none of mine have ever involved partial nudity. Do these people not own mirrors, or are they convinced they they look good and will recieve the added attention they so rightfully deserve when they leave the house in the morning?