Actress Mila Kunis has topped a new poll to find the mainstream star porn fans would most like to see naked in an X-rated adult movie.

The Black Swan star has replaced Jennifer Lawrence as the movie stunner lusty fans would pay the most to watch having sex on screen, according to the latest sex tracker survey posted on the website.

Almost 40 per cent of voters picked the current Esquire magazine Sexiest Woman Alive over Lawrence, who claims 23 per cent. Sofia Vergara is third, Angelina Jolie fourth and Justin Bieber's ex, Selena Gomez, rounds out the top five.