Very cute outfit. She doesn't look that bad. I have a lot of friends that are that skinny, but that's how they're born. She probably is a mix of that and not eating enough.
I think it really depends on the angle the photo is taken from because I think she looks really good here...
She looks much worse in the first pictures.
In the other two though I think she looks gorgeous....she does look super skinny but not too extreme I don't think.