Born in Ixelles, Brussels, Hepburn spent her childhood between Belgium, England, and the Netherlands. In Amsterdam, she studied ballet with Sonia Gaskell. She moved to London in 1948, where she continued her ballet training with Marie Rambert. She began performing as a chorus girl in West End musical theatre productions. Following minor appearances in several films, Hepburn starred in the 1951 Broadway play Gigi after being spotted by French novelist Colette, on whose work the play was based.