There's a thing in the Times about Linda Evangelista, who has some sort of fat freezing thing done and it's gone wrong (I think she's suing). I don't think she looks awful in the "now" photos, just different. However the story is filled with pictures of her in the early 1990s - about 30 years ago. It's completely unrealistic to compare someone with how they looked several decades ago.
Similarly I was at school with a woman who ended up being quite famous and the local paper in my hometown keeps putting photos of her from when she was in her late teens (I follow the paper on FB), triggering loads of comments on how much prettier she used to be underneath. She's in her early forties - she isn't going to look 17 again, no matter what she does.