Catherine was born in London, but she moved to California with her Iranian mother at the age of two. Her mother still acts as her personal assistant. As a girl, she acted in various TV advertisements. She went to UCLA to study biology/ pre-medicine, but she dropped out to become a model in Japan. She moved back into acting with a Mexican commercial for American Express, and then she followed that up by being Isabella Rossellini's nude body double in Death Becomes Her (1992), when she also met her future husband, Adam Beason, who was the director's Robert Zemeckis's assistant. As of 2018, the two reside near Los Angeles with their daughter Gemma Beason and son Ronan Beason.