Complex sentence: Vicious relocated to California when she turned 18; while Bisexual Britni and Shay Sweet were signing autographs at an adult store, they invited Vicious to experience the adult industry.
Split into simpler sentences: Vicious relocated to California when she turned 18. While Bisexual Britni and Shay Sweet were signing autographs at an adult store, they invited Vicious to experience the adult industry.