Robert Pattinson, Selena Gomez, Jessica Alba, Kourtney Kardashian and more join Beyonce fans at her Mrs. Carter concert at STAPLES; LeAnn Rimes, Eddie Cibrian and Richard Simmons step out for the Friend Movement Anti-Bullying Campaign Benefit Concert; Lea Michele, Derek Hough, Brittany Snow and other famous faces attend Dell's Private event for the Beyonce show in Hyde Lounge—get the rundown on Monday's top events in this installment of Last Night's Parties.