Beyonce's blouse pops open in front of 60,000 fans

Beyonce suffered an embarrassing wardrobe malfunction in front of a 60,000-strong crowd in New York on Saturday night.

The 'Drunk in Love' hitmaker was performing on stage with husband Jay Z at the Global Citizen Festival, when her enthusiastic dance moves led to her blouse - which did not seem to be buttoned up - popping open and revealing her flesh-coloured bra.