Laura Bush is a 58-year-old woman. She is quite attractive for a woman her age, provided she uses the right amount of make-up.
I think this is a ridiculous question. I'd be very surprised if the typical guy in his teens or twenties found any 58-year-old woman to be "hot." A 58-year-old woman generally doesn't aspire to be "hot," and I'm sure Mrs. Bush is not an exception to this rule.
I have news for you - 58 year old men don't find 58 year old women hot either. We all naturally want the puberty to, oh say 25 or 30 range, ideally. Anything else is settling.