Olivia Black was an "employee" hired onto the cast of fifth season History's hit reality show Pawn Stars in its fifth season as part-timer. She was played essentially as a companion to Chum Lee, their relationship being both lightly comical and flirtatious as well as a rare bright spot of sex appeal in a show otherwise devoid of physical appeal.
Unfortunately, she was let go soon after her "hiring" when it was revealed that she had previously modeled for Suicide Girls, a pornographic website. A+E Networks, History's parent company deemed this inappropriate for a family show like Pawn Stars and had her let go in typically unironic corporate fashion.
Source:
"'Pawn Stars' shop girl Olivia Black fired after her porn site past is revealed"
http://www.foxnews.com/entertainment/2012/12/20/pawn-stars-shop-girl-olivia-black-fired-after-her-porn-star-past-is-revealed/?intcmp=obnetwork