Continuity mistake: The scenes that Jane is wet or in the water her dress is very open and revealing, and the bodice nearly hangs off her shoulders, revealing her breasts. But the scenes she is dry, her bodice is very prim buttoned up with a butterfly collar. Obviously two different dresses for very separate effects.
Continuity mistake: Near the end of the movie Jane's wearing a loin cloth like Tarzan that the natives dressed her in. When she's with Tarzan and a monkey after washing off the white paint she's suddenly wearing a skirt.
