Why do so many women pose for pictures with their hands on their hips?

Also known as the “chicken wing pose.” This bothers me nearly as much as the dying “duck face” craze. I have a friend that simply can’t pose for a picture without both hands on her hips. I’ve also seen celebrities doing this.

Why do so many women pose for pictures this way? Do you do it? Is it an attempt to look slimmer or is it just a solution to the “where do I put my hands” dilemma?

It just looks so awkward to me!