By the age of 28 if you haven't been asked to pose nude for Playboy, chances are you won't. Just a few days ago it was just announced that Jenny McCarthy will be baring it all again for Playboy. It's been some 20 years since her last appearance in the magazine, where she was its 1993 Playmate of the year. She'll be appearing in the July 2012 issue of the magazine to celebrate her 40th birthday.

We did a little research, and while some 40 year olds and over have appeared on covers, there are very few women that have barred it all on the inside of the publication. The oldest women ever to po...