Bethenny Frankel has given some revealing interviews before ... but never like this!
During a sit down with Anderson Cooper, airing Monday on "Anderson," the talk show host and Frankel were about to show off their push-up skills when Bethenny's dress flew up ... showing half the audience her pink underwear!
The former "Real Housewives of New York" star looked mortified while Anderson went into one of his trademark giggle fits.
"How'd I look? You saw the pink?" she asked, the audience answering with a round of applause.