Singer Beyonce Knowles suffered an embarrassing wardrobe malfunction when her blouse burst open during a performance here. The singer's lacy white blouse popped open revealing her flesh coloured brassiere mid-way through the performance at the Great Lawn of Central Park. However, the “Crazy in love” hitmaker was unruffled by the mishap and continued with her performance in front of 60,000 people. The singer was performing with her husband and rapper Jay-Z in Global Citizen Festival Saturday when the mishap happened, reports dailymail.co.uk. Her appearance came as a surprise to the audience who had only been expecting to see Jay Z. (Source: IANS)