Kevin Mazur/WireImage
People Staff
October 19, 2011 05:55 AM

Blake Lively managed to fly under the radar – not even getting photographed – during a private, four-song concert by pal Florence Welch and her band, Florence + the Machine. Lively and the musician were attached at the hip after the Belvedere-sponsored performance at the Boom Boom Room atop New York’s Standard Hotel, sharing drinks (think: martinis!) and lots of laughter. Also at the bash: Kanye West and Emma Roberts, who was surrounded by girlfriends. – Jessica Wedemeyer

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