Burstyn joins Knightley for West End debut

The Moliere classic, about a runaway student at an all-girls boarding school, is heading to the stage at The Comedy Theatre in January (11) and the 77 year old has signed on to portray the grandmother of one of the girls.

Mad Men star Elisabeth Moss and actress Carole Kane have also been added to the cast in the Lillian Hellman production.

The Children’s Hour was previously turned into a 1961 movie of the same name starring Audrey Hepburn and Shirley MacLaine.