Complex sentence: She first made headlines in the mid- 1960s as one of Andy Warhol's Factory superstars, and danced with The Velvet Underground in Warhol's "Exploding Plastic Inevitable" show, which featured the Velvet Underground and Nico.
Split into simpler sentences: She first made headlines as one of Andy Warhol's Factory superstars, and danced with The Velvet Underground in Warhol's "Exploding Plastic Inevitable". Early in her career, in the mid 1960s, she was a dancer in Andy Warhol's "Exploding Plastic Inevitable" show, which featured the Velvet Underground and Nico.