You could always reframe the situation by averting the obvious answer and asking, "What do you think of MY breasts?" or simply saying "Respect." and leaving it at that... Imo, it elicits higher value by not making a big deal out of it.
Reframe this statement:
"Can you take a picture of us, pleeease?"
For some reason I get that quite a bit, of course, i don't play "bitch" in these sort of situations...