I try to leave as many work related clothes as possible. Shoes are heavy and jackets if required. We have lockers but I like to carry my stuff with me. Champion sports shorts and long-sleeved sweat wicking shirts work great!
http://www.amazon.com/gp/product/B001H0F3Q8
I usually carry this:
Commuting: Work Clothes by
sudoshift, on Flickr
Commuting: Packed by
sudoshift, on Flickr
in that
20-Inch Wheel Commuter by
sudoshift, on Flickr