Los Angeles – Socialite Kim Kardashian had a tough time explaining the meaning of a ‘porn star’ to her younger sisters after her sex tape with ex-boyfriend Ray J was leaked.

The 26-year-old revealed that she was ‘devastated’ when her stepsisters Kylie, 9, and Kendall, 11, who saw her as a role model found out about the sex-tape.

“One day my sisters were watching TV and a picture of my face flashed across the screen with the words ‘Sex Tape?’ underneath. I was devastated. These girls look up to me and want to copy everything I do,” Contactmusic quoted Kardashian, as saying.

She insisted that the conversation she then had with her sisters about what a porn-star was about was the ‘hardest’ one she ever had.

“It was the hardest conversation I’ve ever had… Kylie admitted, ‘Some kids at school said you were a porn star.’ How do you respond to something like that?” she said.

Kardashian has been a subject of attention because of a graphic sex tape with Ray J, which was leaked to an internet porn firm last year.

Prior to the release of this film, Kardashian announced her intention to pursue legal action to block distribution of the tape, which came out as the first public acknowledgement of the existence of the tape, which she had previously denied.

Vivid Video made the sex tape available online in March 2007. On April 30, 2007, the socialite settled with Vivid Entertainment, which paid 1 million dollar to an unidentified source for the video.