Famous Friends Mingle at the Grammys
A host of celebrity pals party together at the 2013 Grammys.
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John Mayer, Keith Urban
LOS ANGELES, CA - FEBRUARY 10: Singers John Mayer (L) and Keith Urban attend the 55th Annual GRAMMY Awards at STAPLES Center on February 10, 2013 in Los Angeles, California. (Photo by Christopher Polk/Getty Images for NARAS)