The Millionairess (1960)

Based on George Bernard Shaw s play, this was Peter Sellers first big international hit, thanks not only to the casting of Sophia Loren in the title role but a memorable scene in which she reveals her elaborate undergarments. She s not merely a millionairess but the world s richest woman but her inheritance comes with a catch: her late father s will states that she can only marry a man who can turn £500 into £15,000 within three months. But when she falls in love with Sellers altruistic Indian doctor, she discovers that he not only has no head for business, but that there s an equally binding requirement made of his own prospective bride, demanding that she adopt a very different lifestyle from the one she s used to. The superb supporting cast includes Alastair Sim as a Jeeves-like lawyer, Dennis Price as a caddish would-be suitor and Vittorio de Sica as an Italian restaurateur.