Headbands

I'm wearing a pink-and-white striped headband in this same shape today (they didn't have the picture of my exact pattern).

Are headbands alright to wear to work in the adult world? I feel a bit too Caddyshack today, in my navy a-line skirt, white sweater, and pink-and-white striped headband. But I love it. When else are you supposed to wear a headband? Not just for tennis. It's too darn hot here, anyway, to wear pretty tennis clothes. We don't even really play tennis (Jonathan does sometimes).

Thoughts on headbands? (Thick ones?)