Clothing Research Trip- school project/assignment

This is what I found.  In a typical world, wear a size small in top and size 26/ or 2 in bottoms. When I go to Target to buy Mossimo jeans or Kohl's for Guess jeans, usually I buy size 2 in pant or jeans. They fit me well. When I purchase Calvin Klein jeans, I tried on a size 2 but they were to tight. The next size up was a size 4 and they were a tiny bit lose. I wear them when I have to tuck a shirt in.  I have a small back side so jean are hardest for me to find.

*I'm in a hotel in Colorado, excuse the bathroom behind me*