Cinematographer Edward Lachman created the 1950s "look" by using the same type of lighting equipment (incandescent), the same lighting techniques, and the same type of lens filters when shooting this film, as would have been used on a 1950s era melodrama.
Julianne Moore was the one who suggested that her character had to be blonde. Todd Haynes disagreed at first, but later told her she was right. So he had to do some changes in the film, like the color of the scarf, in order to fit that.
Due to Julianne Moore's pregnancy, Sandy Powell commissioned a duplicate of Cathy's party dress, with the pattern modified to fit her, after shooting of the party scene was pushed back to later in the schedule. However, due to budget constraints, duplicating the dress was not an option. The dress was carefully shaded by a member of the wardrobe department to disguise Moore's pregnancy.
In the middle of shooting, the production's bond company took away the easy-pass cards used by the teamsters on the crew during their daily commute over the Jersey turnpike to locations. This ended up costing the production more, as the drivers still used the no-stop toll lanes at the turnpike and ended up incurring fines.