I didn't get cold at all. I was wearing jeans, sheepskin lined boots, a tshirt and a fleece, and was comfortable all day - except when I stood under a heating vent and thought I was going to melt!
I wore thermals and took them off!!! I've never been warm there but was carrying my coat most of the day. I wore jeans, long boots, long sleeved top, fleece and coat and was fine.