Katy Perry's Grammy Date? Allison Williams from Girls

It's a Grammy Girls date for Katy Perry and Allison Williams

Source: http://feeds.people.com/~r/people/headlines/~3/hJw8R7NWN_8/0,,20658244_20672013,00.html

Halle Berry Hayden Panettiere Haylie Duff Heidi Klum Heidi Montag Hilarie Burton Hilary Duff Hilary Swank