Joan O’Brien, the actress and singer who shared a submarine with Cary Grant in Operation Petticoat and a romantic relationship with Elvis Presley in It Happened at the World’s Fair, has died.

Actress-singer Joan O’Brien, who starred with Cary Grant and Tony Curtis in “Operation Petticoat” and was Elvis Presley’s love interest in “It Happened at the World’s Fair,” has died.

Joan O'Brien perhaps received the surprise of her life when she walked into the Stage Door Canteen at the National World War II Museum, where family and friends had been hiding out.

Joan O'Brien: The actress, shown tending to Elvis Presley in "It Happened at the World's Fair," died at the age of 89, her daughter confirmed on May 14. (FilmPublicityArchive/United Archives via ...