Well, I'm at the age where I don't worry about it anymore, although I do feel better at this weight in a swimsuit.
Have you checked Lands End? While you don't have to buy their suits, they do have some information on what kinds of suits look good on certain figures. I believe they also have virtual models. Not sure what a Miracle suit is, but if it would miraculously make me look like Carmen Electra in a swimsuit, I'd buy it.