life:
Happy Birthday, Marilyn.
Here, on Marilyn’s birthday, LIFE.com presents a selection of Eyerman’s rare photos of the young actress as she studied with three coaches: bandleader Phil Moore (singing); dance instructor, and the ex-husband of the great Cyd Charisse, Nico Charisse (ballet); and a one-time European stage star, Natasha Lytess, who would serve as Monroe’s acting coach until the mid-1950s.