The late actress lost her battle to cancer on Saturday (July 4) in Woodland Hills, Calif.
Diana and Michael‘s dad Kirk met when they were acting students at the American Academy of Dramatic Arts in New York. They tied the knot in 1943 and welcomed Michael into the world the next year. The couple would divorce in 1951.
Diana has appeared in over 20 films, such as Planes, Trains and Automobiles and It Runs in the Family, along with TV roles on The West Wing and Love is a Many Splendored Thing.
Our thoughts go out to Diana‘s family and friends during this difficult time.