Continuity mistake: When Joy is talking to the gentleman in the cowboy hat when in her room in Texas, the strings on his string tie change from on the left of his button to one string on each side of the button and back again.
Continuity mistake: Near the beginning of the movie when Joy is in her airline's company uniform and getting ready to go to work, the knot on her scarf changes from loose to tight several times in the different shots.