Who puts the most pressure on girls and women to be thin/attractive?

I would think it's other women. Women are catty and there have been so many times I've been around other women and they talk about how fat other women are. Personally, I think there's more important things going on in the world than to sit around wasting my time and energy talking bad about other people. When I was younger about 15 or so I would hardly eat, I would starve myself just so I could be skinny like everyone else. After about 18 years old I really gave that up and started not to care what anyone else thinks of me.