I get that it looks weird, but as other people have pointed out there are reasons for this. Most of the parts of the body which experience rapid heat loss are on the top half. Personally, I wear skirts to work all year round because I hate sitting in pants all day, and I mostly hate tights. People are constantly asking if I'm cold because of my bare legs but so long as I'm warm up top and have decent shoes and/or socks on, I'm toasty.