Her dress also gets hiked up a bit to show her panties before Diora goes down on the guy as he leans back against the bar.
Being drunk, she then falls down on the floor, her large breasts pressed against the floor before the guy helps her to the bed.
I never thought she was a particularly terrible actress from what I've seen, but maybe her ability or lack thereof to select roles and rub shoulders with the correct people had seriously let her down.