Complex sentence: She was a cast member in the South Pacific season of MTV's reality show "Road Rules", a fact that gave her a pretext to offer her services to "Playboy", which she had heard was planning a pictorial specifically focussing on reality television.
Split into simpler sentences: She was a cast member in the South Pacific season of MTV's reality show "Road Rules". After her stint on Road Rules, she posed for "Playboy", which was planning a pictorial specifically focusing on reality television.