Prince William and the Duchess of Cambridge have topped sex tape distributor Vivid's fourth annual Top Ten Hottest Couples poll for the third year in a row.

Lusty fans want to see non-existent candid footage of the royals making love over saucy film of Katy Perry and John Mayer and Beyonce and Jay Z.

Vivid founder Steve Hirsch tells Wenn, "The young royals remain our top choice. Kate’s pregnancy and birth to Prince George only made the couple more popular. They project natural good looks and good health and their stature on the world stage is unparalleled. We know our chances of getting them to star in a sex tape are slim, but that’s what wish lists are for."

Also making the sex tapes 'wish list' are Kanye West and Kim Kardashian, who became a sex tape superstar when footage of her romp with ex-boyfriend Ray J leaked.

Meanwhile Angelina Jolie and Brad Pitt round out the 2013 top five, just ahead of Pitt's ex Jennifer Aniston and her fiance Justin Theroux.