Al Roker and Matt Lauer
Matt Lauer
Maria Menounos
Nancy O'Dell
Giuliana Rancic
Ariel Winter
Julianne Hough
Debra Messing
Kelly Osbourne
Nicole Richie
Amy Adams
Katherine McPhee
Francesca Eastwood
Frances Fisher
Claire Danes
Source
Red Carpet live stream here
Will update as more celebrities arrive
Source:
http://ohnotheydidnt.livejournal.com/74700116.html