Anyone who is anyone is seemingly framed in that question especially if he or she looks at all good. Sarah Palin is a former beauty queen, so the supposition is pretty natural. She is featured in the press frequently so the question comes up often.
The problem in trying to look into the issue is the relative scarcity of honest images of Mrs Palin. Photo shopped images abound, but more honest images are far harder to find.
From what I have seen it looks like she has had relatively little real surgical help. She has more likely lost some weight and had some minor skin care/Botulinum toxin help and maybe a non-surgical makeover.