Robert Pattinson, Natalie Portman and More Attend Justin Timberlake, Jay Z Concert

Robert Pattinson attends Jay-z Justin Timberlake concert in LA

The Rose Bowl was the place to be on Sunday, July 28. Dozens of Hollywood's biggest stars, ranging from Robert Pattinson to Natalie Portman, showed up to watch Justin Timberlake and Jay Z take the stage in Pasadena, Calif., as part of their 12-city Legends of the Summer tour. More than 60,000 people attended the star-studded concert.

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Natalie Portman and Benjamin Millepied attend the Justin Timberlake and Jay Z concert at the Rose Bowl in Pasadena on July 28, 2013. NGRE ROLO/AKM-GSI

Pattinson, 27, attended the show with Australian singer/songwriter Sia, 37. Wearing a black hoodie, a leather jacket, faded jeans and a baseball cap, the Twilight star made a discreet entrance with the "Clap Your Hands" singer in tow. Portman, meanwhile, arrived hand-in-hand with her husband, Benjamin Millepied. The star of Thor: The Dark World, 32, and the French choreographer, 36, each wore VIP lanyards around their necks.

Jessica Alba snapped a pic backstage with her gal pal, model Kelly Sawyer, and Jay Z's wife, Beyonce. "I just love this girl," the Sin City: A Dame to Kill For star said of Sawyer. (Alba, 32, also shared an Instagram video of her husband, movie producer Cash Warren, dancing during Jay Z's set.)

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Beyonce, Jessica Alba and Kelly Sawyer attend the Justin Timberlake/Jay-z concert Courtesy Kelly Sawyer

Other stars spotted enjoying the concert included Arrested Development's Jason Bateman, Pretty Little Liars' Ashley Benson, Cougar Town's Brian Van Holt, Hart of Dixie's Scott Porter, Dallas' Jesse Metcalfe, Brothers & Sisters' Balthazar Getty, Planet Sheen's Soleil Moon Frye, Last Resort's Scott Speedman, Grown Ups 2's Patrick Schwarzenegger and jewelry designer Jennifer Meyer.

Timberlake, 32, and Jay Z, 43, opened the show with "Holy Grail" and concluded with a medley of the rapper's "Encore," the singer's "SexyBack" and the pair's "Suit & Tie." The musicians kicked off the Legends of the Summer tour July 17 in Toronto. It will wrap up Aug. 16 in Miami Gardens.

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