It's very much an achievement because she's worked on her looks and got surgery/good makeup/great clothes etc.
As many of the before and after pics in this thread shows, it's not all genetics.
To be fair though, I don't know why people are so obsessed.
Surgery etc can be good if it's subtle and well done. But it's an addiction, and before you know it, you look like Katie Price or Sharon Osbourne. It's so sad.