As Jennifer, Stefanie keeps her fingernails rather short. When Jennifer is looking at the jewels in the case, the nails are considerably longer.
In the early scene at Hart Industries, Jonathan goes into his office and leaves the doors wide open. A couple of minutes later, he calls in his secretary and she has to open the doors to enter the office.
Pamela is seen using uneven parallel bars, and tells jennifer she was a "world-class gymnast." No world class gymnast is that tall.
Jonathan watches Patrick shoot skeet, then asks him, "is that a pump?"
Max is standing outside of the Hart's room on the boat, and calls him "Mr. H", even though all three of them are traveling incognito.