This film, part of the Preston Sturges season at BFI Southbank, is also screening on February 10th. You can find the full details here.
Chicago Reader review:
District attorney Fred MacMurray falls in love with Barbara Stanwyck—a problem, since he's prosecuting her for shoplifting. The loose, graceful script is by Preston Sturges (one of his last before he turned to directing), and it partakes of a softness and nostalgia that seldom surfaced in his own films. Mitchell Leisen, the director, serves the material very well with his slightly distanced, glowing style.
Here (and above) is the trailer.