Madonna exposes breast at Istanbul gig - video
The 'Girl Gone Wild' singer was performing in Istanbul on Friday (June 8) as part of her current world tour when she begin shedding clothes during a track.
While singing 'Human Nature', the 53-year-old stripped off her shirt, before flashing her nipple by peeling down her laced bra.
Madonna has caused controversy during her 'MDNA tour' in recent weeks, including using a swastika image in one of her pre-recorded videos.
She has also performed a mash-up of her track 'Express Yourself' with Lady GaGa's similar sounding 'Born This Way', with some commentators calling it a dig at the younger star.
Watch the video for Madonna's 'Give Me All Your Luvin'' below: