I personally think that a size 12 is not chunky as such but it is more about how you feel. A size 12 is big for me, I can feel the extra weight, it hurts my knees and ankles and gets in the way of me sitting down because my belly creases up. I do not walk down the street and look at women who may or may not be a size 12 and think they are chunky, but me, yes I am harsher to myself. I just found a picture on Facebook of me at a size 12 and my heaviest and I do look big in it. I will post it if I feel brave enough with a picture now and I think most will agree I do look 'chunky' like it. Mind you I am stood next to my size 8 daughters!