Arcade Fire's Lollapalooza Chile set interrupted by Julian Casablancas

Arcade Fire have gotten a lot of press for their wild stage show and awesome cover choice on their Reflektor tour. Strokes frontman Julian Casablancas decided he wanted a piece of that action and went full Papoose, interrupting Win Butler and Co's Lolla Chile set wearing one of the band's famous paper-mache heads.

Casablancas came out disguised as Win before being ushered off the stage with a "perdon" to the crowd.

Expect Win Butler to interrupt whatever song starts off Comedown Machine in the near future.