wardrobe malfunction

noun1

1. •
   (euphemistic) An accidental counterpart of indecent exposure caused by a fault in someone's clothing (especially that of a performer) or by an error made while changing clothes.

   • Monaco, a 23-year-old Argentinian seeded No. 23, survived the most unlikely wardrobe malfunction to save a match point and win a third-set tiebreaker, 8-6. — 2007