Her breakthrough came with Federico Fellini’s 8½ (1963), where she portrayed the idealized muse of the protagonist, played by Marcello Mastroianni. That same year, she delivered a memorable performance as Angelica Sedara in Luchino Visconti’s The Leopard, starring opposite Burt Lancaster. She further solidified her status with roles in Sergio Leone’s Once Upon a Time in the West (1968) and Blake Edwards’ The Pink Panther (1963).