Jennifer Lynn Siebel Newsom (born June 19, 1974) is an American documentary filmmaker and actress who is the first partner of California as the wife of governor Gavin Newsom. She is the director, writer, and producer of the film Miss Representation, which premiered in the documentary competition at the 2011 Sundance Film Festival. The film examines how the media has underrepresented women in positions of power. The Mask You Live In, her second film which she wrote, produced and directed, scrutinizes American society's definition of masculinity.