Don't be jealous, but ... I guess one of the reasons that I'm comfortable going out dressed is that I'm a pretty average size for a woman. I'm 5'9 and 150 lbs, with a 32 inch waist. I typically wear a size 14 (XL) dress or top and a size 12 (L) pants. Since women's sizes are all over the place, sometimes I can even size down.
While I'm at the high end of average women's height, I'm probably of average weight. I guess I'm just lucky that I fit into and average GG height/weight profile.