Most Helpful Guy
Most of the time dressed up works for me. If you are the pretty/beautiful/gorgeous type then sweats can work a little more often. I can give you an example of the other extreme. I once worked with a homely looking girl, but she outdressed her female colleagues; makeup was always perfect; she was self confident; very competent on the job; and friendly -- as a result, she always looked better than she looked. I imagine she would have looked terrible in sweats and a tee.