qnli question: What song did she perform at the MTV Awards? sentence: Her appearance helped that year's MTV Video Music Awards become the most-watched broadcast in MTV history, pulling in 12.4 million viewers; the announcement was listed in Guinness World Records for "most tweets per second recorded for a single event" on Twitter, receiving 8,868 tweets per second and "Beyonce pregnant" was the most Googled term the week of August 29, 2011.