Christie Brinkly, now in her sixties, is still very sexy. I mean, that woman has aged very well. Outside of being a famous busty blonde poster girl during her career as  a supermodel, she may be best remembered as the hot girl in the red Ferarri in National Lampoon's "Vacation." The pool scene was really good, but you have to remember that Chevy's wife was being played by Beverly D'Angelo, who was quite sexy in her own right. So, in that situation, do you screw the hot blonde in the pool, or do you you screw your hot wife and keep your balls intact? Correct - you screw the new girl and hope the wife doesn't catch you.

From Wikipedia:

• Born: Christie Lee Hudson February 2, 1954  Monroe, Michigan, U.S.
• Occupation: Model, actress, designer
• Hometown: Los Angeles, California
• Height: 5 ft 9.5 in
• Spouse(s): Jean-François Allaux (1973–1981) Billy Joel (1985–1994) Richard Taubman (1994–1995) Peter Cook (1996–2008)
• Children: 3, including Alexa Ray Joel

Christie Brinkley (born Christie Lee Hudson; February 2, 1954) is an American model, actress and businesswoman.[2] Brinkley gained worldwide fame with her appearances in the late 1970s Sports Illustrated Swimsuit Issues, ultimately appearing on an unprecedented three consecutive covers starting in 1979. She spent twenty-five years as the face of CoverGirl,[3] has appeared on over 500 magazine covers, and has signed contracts with major brands—both fashion and non-fashion.