There’s no place better to throw a party than at the Playboy mansion. Of course, having hundreds of beautiful women who are willing to strip down to nearly nothing certainly helps. But it’s the girls wearing only the mark of an painter’s brush that make Playboy’s Mansion Parties legendary. Perhaps no one knows this better than the birthday boy himself. In honor of Hef’s 85th and Marston’s 21st birthdays, we give you 112 of photos of the mansion’s most cunning walking canvases. Enjoy!