Robert Pattinson


Jay-Z and Justin Timberlake are the Legends of the Summer, but they also had some pretty legendary concertgoers at Sunday night's show in Pasadena, Calif.

Robert Pattinson attended the concert with Sia, an Australian indie rock singer, and both tried to remain incognito as they made their way into the Rose Bowl Stadium.

Whether Kristen Stewart's ex, 27, and his concert date, 37, are anything more than friends remains to be determined. As you'll recall, though, R.Pattz was snapped kissing a mystery brunette just last week in Toronto, and Sia isclearly a platinum blonde.

Whatever the case, Rob and Sia were in good company. Among the other celebs in attendance? Beyoncé, Diddy, J. Cole, Ludacris, Timbaland and Glee stars Chris Colfer and Ashley Fink.

Jessica Alba and hubby Cash Warren came out to see Hov and J.T. in action, too. The actress and entrepreneur Instagrammed a clip of Jay performing "On to the Next One." She also shared a cute vid of her pal Kelly Sawyer and her husband, Jamie Patricof, rocking out in the audience.

Clearly even the stars among us get OMG levels of excited to see Jay and J.T. in action!

Justin Timberlake, Jay-Z, Grammys, Performance

Kevin Winter/Getty Images

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