Some of our favorite photographers around, JUCO, set up an official portrait studio at this year's iHeartRadio Music Festival to shoot the event's many famous faces before they took to the stage. Click through to see awesome shots of everyone from our cover girl, J. Lo, to Nick Jonas, Diplo, Rita Ora and more. If you weren't at the fest, you can watch it on the CW Network as an exclusive two-night special on September 29 and 30 from 8:00-10:00 p.m.

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