From Chateau Heartiste: The better response is to humorously clue her into the fact that you know what she’s up to, without going all the way to angrily indicting her for malfeasant immodesty.
“Jiggling your tits? That’s quaint, like something my grandma would’ve done back in her day. How many men does that work on?”
“Hey, what do you think this place is, a brothel?”
“You’re all class.”
“The burlesque club is down the street.”
“I was about to say ‘show me your tits’ but you beat me to it.”
“You’re gonna have to try harder than that.” (If she plays innocent and asks what you mean by that, summon the spirit of The Trumpening and say, “Your game is weak, you’re a weak game-having girl. Give me a real challenge.”)