Ian Gavan/Getty Images
The ticket to entry? Free — as long as you were wearing Levi's.
The Levi's-sponsored event was strictly enforced. Guests who arrived not wearing the denim brand were promptly turned away, with many tweeting their frustration.
“F---@LEVIS,” tweeted @infinityguitarz. “I’m going to buy lucky brand jeans.”
While others made jokes about the rules:
Hope you’re not planning to go to the @LEVIS@HAIMtheband@sleighbells concert in your other jeans. #WTH? pic.twitter.com/96eHvosg4B
— Adrianne (@ABenzion) August 4, 2014
Hopeful concert goers' jeans labels were checked here at the entrance:
Business Insider/Aly Weisman
Business Insider/Aly Weisman
Hundreds of people showed up to the event, but it would have been more crowded if all brands of jeans were welcome.
Business Insider/Aly Weisman
Sleigh Bells took the stage first, followed by girl band, Haim.
Business Insider/Aly Weisman
Business Insider/Aly Weisman
And an equally as photogenic bar.
Business Insider/Aly Weisman
The view alone was worth the entry fee.
Business Insider/Aly Weisman
SEE ALSO: Everything You Missed At Lollapalooza Music Festival In Chicago [PHOTOS]