knee-length cotton twill shorts and a button-down shirt definitely counted as appropriate officewear, hairy legs and all

It sounds a very good look. When I went into today one of my male colleagues was wearing exactly that: as he said, if it isn't shorts weather today, when is it? A female colleague and I had considered it, but I felt my walking shorts were a bit too short!

It would be the perfect evening for a swim tonight, I hope you got one.