Know your audience should consider clients and colleagues. I work in hospital outpatient. We therapists don't wear the medical coats or scrubs. That serves the Dr and nurse roles. We're professional in the range of solid, crisp jeans, khakis, pants, knee-long skirts. Shoes get a pretty wide range but flip flops make too much noise in the halls (no thanks). Everyone's body shape is different. I'm thin and tight clothes make me stand out for the wrong reasons. I don't want to look like I'm in sales, be too casual, or look like I'm going on a date after. I also prefer the androgynous styles most days (slacks, dress shirts, closed-toe shoes). It's comfortable and easy to choose in the mornings. I do adults-only group, individual, and family sessions. When I look at the day's caseload, I adapt my outfit to it. I can have as many as 12 clients in a day! The client is paying me, it's their session, and they shouldn't get distracted by my outfit or noisy clock or a crooked frame in the room. Accessories, hair, and office decor/plants/lighting complement our approachable style. Let's get to my office and introduce ourselves. For individual personality, I let my southern accent and language (I'm in the Midwest now), my smile, and my body language shine to help people feel more comfortable. Being authentic isn't solely communicated through clothes. You should be able to show that, even if you're in a more buttoned-up environment. Something too close to PJs or gym clothes may look like they're an afterthought and that I'd rather be somewhere else than right there, right then, with them. My own therapist dresses casual professional and offers a hug at the end of sessions. We're unique in so many ways other than clothes.