Vaccines & Dale Earnhardt Jr Jr at Guess

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American lifestyle brand, Guess is famous for its denim and unforgettable sexy ad campaigns, invites you to kick off Lollapalooza this Thursday, August 4, with an exclusive in-store event at its Michigan Avenue location. In conjunction with Nylon, one the leading independent music and fashion publications, Guess will indulge party goers with summery cocktails, cocktails, sweet treats, a photo booth, and most importantly, sneak peek performances from some of Lolla’s rising stars. But wait, that's not all! Dale Earnhardt Jr. Jr. will be on hand to deliver an acoustic performance of the duo’s anthem, “Simple Girl” is currently the background tune of the Guess Fall 2011 Behind the Scenes Campaign video directed by Ellen Von Unwerth and featuring the campaign’s model, Amber Heard. English indie band The Vaccines will DJ, and acclaimed Midwest DJ L1ght will mix in everything from indie-electronica to trance. Catch them at the 605 N. Michigan store before anyone else does at the festival! The event is open to the public, and guests can RSVP here. [Racked Inbox]