Why couldn't they have Lois look like THIS in IV?
These are pictures of Margot Kidder from the same time she filmed Superman IV to years after.
Were they purposefully trying to diminish Lois' sex appeal? Because Kidder was still gorgeous in her off time back then.
1986
http://media.gettyimages.com/photos/actors-bruce-mcgill-and-margot-kidder-attend-the-command-performance-picture-id156108360
http://media.gettyimages.com/photos/actress-margot-kidder-attends-the-command-performance-benefit-for-the-picture-id156107005
1988
http://media.gettyimages.com/photos/actress-margot-kidder-attends-the-third-annual-better-world-society-picture-id156107279
1991
http://media.gettyimages.com/photos/actress-margot-kidder-attends-a-party-for-richard-pryor-television-picture-id156107338