Top 10 celebrities who got their start in porn

There's a big divide between the world of Hollywood movies and adult films with stars of the latter rarely crossing over.

However, some popular names from the big screen actually started out in porn before making it in Tinseltown.

Actors such as David Duchovny, Sylvester Stallone and Marilyn Monroe appeared in pornography TV, films or publications, although some admittedly would be classified as 'soft porn'.