That's my fear: that I'll be in khakis when everyone else came from their offices (lots more formal than USGS runs probably, as we're about as informal as it gets) in suits and dresses, and the men just removed their ties. I rather be a little on the dressy side for the crowd than vice versa, especially if I can manage that without sacrificing comfort.

Must go contemplate the closet contents again, and try on a few more things...