Madonna certainly doesn’t repress herself. The Queen of Pop shocked crowds as she flashed her right breast during a performance of her song, "Human Nature," at a concert in Istanbul on Thursday. Unlike Janet Jackson’s 2004 Super Bowl nip slip, the 53-year-old Material Girl's reveal was entirely intentional. Madonna suggestively tugged at the straps of her bra as she sang the 1995 tune before pulling down the cup to expose her entire breast. She then turned away from the audience, unzipped her pinstripped trousers and put her hand down her pants.