Pushup bras.

These things are super hilarious. I kind of love them. 

There is a distinct worry about the whole false-advertising aspect of things, but can easily be circumvented by avoiding the use of a pushup when meeting men for the first time. By avoiding excessive boob-lifting usage, one can keep expectations realistic and also whip 'em out when the situation calls for it. Or when wearing a v-neck t-shirt. Or really any time. 

Boobs are fun. =)