When Jimmy the Tulip's wife tries to seduce Oz. Right after that, they leave the bathroom and Bruce Willis knocks out Oz. Then Jimmy and his wife talk for second. If you look at her shirt strap during this conversation you can notice it slip off. The camera view changes and it is magically back up yet you never saw her put it there and the time between camera views was less then half a second so there was an insufficient amount of time for her to put it back up.