Erin O'Reilly: Erin O'Reilly. Actress: The Baby. Erin O'Reilly is known for The Baby (1973), The Princess Diaries (2001) and Charlie's Angels (1976).
Known For: The Baby (Babysitter), The Princess Diaries (Scottish Duchess), Charlie's Angels (Mary Jo Walker(as Erin O'Rielly)), Busting (Doris)