"Unfortunately, a mishap occurred resulting in an unexpected nipple slip ." "The occurrence happened by mistake." "The revealing of the nipple was unforeseen." "It was an incidental clothing mishap." "The mishap startled all onlookers." "Precautions have been implemented to ensure this won't happen again." "We deeply regret any trouble this may have caused." "We assure you, this matter is being treated with utmost seriousness."