Bombay Talkie (1970)

Lucia Lane, an English writer by way of the US, arrives in Bombay to watch the filming of one of her novels. She's nearing middle age, she's had several husbands, she's lonely and self-absorbed. Hari, a screenwriter, offers to show her around. She's interested only in the film's leading man, Vikram, younger than she, married, and building a career as a matinee idol.