Katrina Darling, who describes herself as "the royal family's closest brush with soft porn", will pose for an eight-page nude pictorial in the men's mag, due out on August 17.
The 21-year-old Brit is a distant cousin of the Duchess and she's known for milking her family ties for all they're worth, recently stripping to the tune of God Save The Queen at a burlesque show in New York.
Check out the clip above!
