The First Cut Is The Deepest

Louis B. Mayer throws Judy Garland a birthday at his home, June 11, 1939 (her actual birthday was June 10).
I wonder if he allowed her to eat a piece of cake?

Also pictured are Ann Rutheford, Betty Janes, Louis B. Mayer, Mickey Rooney, Lani Lyn, and June Preisser.