I stopped off at Old Navy's clearance rack the other day to look for jeans. First, I need to say that I don't remember ever buying a size 4 in my life. And I have to admit that I was a little giddy when they actually fit. But then I became suspicious. This can't be right. "Old Navy has realized that it if they tag things smaller than they are, people would buy them because it's good for self esteem! :) I've discovered their marketing strategy." Vanity sizing! So I tried on a pair of shorts and a pair of capris in the same size. And they fit. And I bought them all. It worked on me.