That's actually what she was famous for before reality tv

and actually there's a second one making the rounds
Kardashian did not authorize the release her first video, but reportedly ended up reaching a settlement in which she received millions in profits from it's distribution. However, now that she is a household name for reasons other than being in a porn video, the Star says she is not happy with news another tape is making the rounds, and is seeking to block it's sale.
http://www.foxnews.com/entertainment...being-shopped/