In one of her rare public appearances since filing for divorce from Arnold Schwarzenegger last summer, Shriver described Leibovitz as a living legend and "a woman of brilliance."
"I'm here out of friendship for her, but really out of respect for the way she has lived her extraordinary life," Shriver said. "You have chosen (to recognize) a woman who has had an incredible effect not just on the arts, not just on fashion, not just on photography, not just on women, but on all of us."
Actresses Marisa Tomei, Rosanna Arquette and Daphne Zuniga were among the celebrities at the luncheon that benefited MOCA's educational programs. A group of young students participating in Contemporary Art Start also attended the event.