You will have to look hard to find a child star cuter than Margaret O’Brien. Born in 1937 she was a sort of heir apparent to Shirley Temple. She made her debut in 1941 in "Babes on Broadway" starring Mickey Rooney and Judy Garland. She received a starring role in 1942's "Journey For Margaret" with Robert Young and in 1944 was unforgettable with Judy Garland in "Meet Me in St. Louis".
By 1949, at age 12, MGM decided not to renew Margaret’s contract and despite a few more minor movie roles, she began appearing as a guest star in many TV productions. Today, at 69 and having been through two failed marriages, she continues to do some TV and stage work while living quietly in California.