"Unfortunately, a mishap occurred resulting in an unexpected nipple slip ." "It was an unintentional circumstance." "The revealing of the nipple was unforeseen." "It was an inadvertent clothing malfunction." "The incident caught everyone by surprise." "Precautions have been implemented to ensure this won't happen again." "We sincerely apologize for any inconvenience caused." "We assure you, this matter is being treated with utmost seriousness."