In the scene on the Nautilus, when they recruit Dr. Jekyll and Mr. Hyde, watch when Hyde transforms back to Jekyll. When he first turns all human sized, gasping for air and all that, watch before he sinks to the floor. His pants fit him around the waist perfectly. But after Jekyll falls and rises again, he has to hold the pants up because they are Hyde sized. That just makes no sense. Either the pants change sizes with him or they don't. You can't have it both ways.