I agree with Indy on the skirts. Until I switched careers, I almost never wore pants to work. But now, it seems to brand me as as outlier. I wear a dress or skirt 1-2X a week, on days when I am not working with young children. More in the summer, because a dress is much cooler than capris or a skirt.
The people I work with dress like they are in school, although the younger clinicians do it with some style, i.e.scarves, cool boots, sweaters. But, they all wear jeans. One male clinician I work with (my age) wears a button down shirt and tie every day, but he is based at the high school, so maybe that's what the teachers there wear. The other male clinician (young) wears very casual clothes.
Last year, when I was working in a clinic, there were only 2-3 clinicians who regularly wore skirts/dresses. The admin. staff dressed better! I understand the idea of not overdressing when you are working with people struggling with economics, but I feel the mere act of putting a skirt on sort of labels me, more with colleagues than clients. In fact, I've had 1-2 moms say out loud that I am the first therapist they've had who dresses nicely. I never reply back, but I wonder how this got started. And, I am talking about dressing nicely in a way that would be termed business casual.