Continuity mistake: When Jennifer Walters is first introduced, her fingernails are unpolished. Later when she is restrained in Dr. Doom's lair, her fingernails alternate between being painted pink and red. Given that she and Bruce were running for their lives, she wouldn't have had time to paint her nails. Later when she transforms into She-Hulk, her fingernails turn green with the rest of her body, but if her fingernails were painted, they should still appear that color, as her skin and hair turning green wouldn't magically remove nail polish.
Continuity mistake: When Bruce and She-Hulk are hitchhiking, the sign for New York behind them changes size and lettering. When it is first shown, it is significantly taller than both of them with the lettering reading "NeW York" (sic) in a thin and long font type. When the shot changes, the sign is much shorter and the lettering now reads as "NEW York" in a more block-lettering style.