Lady Gaga crashed the 2013 edition of the annual Pitchfork Festival in Chicago. She was there in blonde and high-heeled form last year, seeing her pal Kendrick Lamar. This year, she looked like Joan Jett's doppelganger, with shaggy black hair and a long, loose white rocker tee. Come on, did you really expect Mama Monster to replicate last year's look? Really?

Gaga and her pals were having a good time at the hip event. Check out the semi- shaved head and makeup-free look that Gaga was sporting.

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Quick, someone cue up Joan Jett's 'I Love Rock 'n' Roll.' Gaga really looked like Kristen Stewart playing Jett in the movie about The Runaways. We love when she dresses down.

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VIP! Here's Gaga and her crew on the side of the stage.

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And another shot while on the stage. We like Gaga in full on rocker mode. She looks so normal, but still with that Ma Monster edge.

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Rocker Chick! Gaga is a true style chameleon.

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