La Parisienne (1957)

An immature young girl (Brigitte Bardot) marries a philanderer (Henri Vidal, whose character is named Michel Legrand) and when she suspects he's still seeing his ex-mistress (Madeleine Lebeau), she concocts a plot to make him jealous by having an affair with a visiting Prince (Charles Boyer). Directed by Michel Boisrond, this rather silly sex farce is enlivened by the pert presence of the sexy Bardot at the peak of her nubile beauty. Why anyone marrried to the vixenish Bardot would even think of cheating is beyond understanding but for plot purposes, (try to) suspend disbelief. Comedies like this need to be a cinematic souffle but what we end up with is bread and butter. But oh that Brigitte ..... viva Bardot! With Nadia Gray and Andre Luguet.