Go to the part where Austin and Vanessa were on the plane. When Austin tries to make Vanessa get on the bed, her glasses are on. It cuts to Austin, then back to Vanessa, and her glasses are off. She made no move to take them off. Then, when she gets on the bed, they are back on. Then when she gets off, this time it SHOWS take off her glasses, but in the next cut, they are back on again. Lots of mistakes with those glasses!