Continuity mistake: In the screen where Vivian has been on the shopping spree, she returns to the hotel wearing the cream colored dress and a black hat. When she walks into the hotel, her black purse is under one arm. Then they show a behind shot of her walking away and the purse is under the other arm.
Continuity mistake: At the beginning when Vivian is sitting on his desk she says " you can pay me now" and he hands her her money and she puts it inside her boot. Later, after the Champagne comes and she is sitting on the steps in the hotel room she asks "do you mind if I take off my boots." When she does there is no money, not even in the knee highs she is wearing under her boots.