Jean Arthur, née Gladys Georgianna Greene poses for a promo photo made when she was filming the romantic comedy A Lady Takes a Chance with John Wayne. Arthur was a very big star who began in silent cinema, made the transition to talkies, and reached the height of her fame in her mid-thirties. She was billed above Wayne for Lady, and he was a huge star himself. Some of Arthur’s other efforts include Shane and Mr. Smith Goes to Washington. The photo above dates from 1943, and A Lady Takes a Chance premiered in the U.S. today that same year.
This is loaded, so answer this next question carefully. Who's the star of this movie?