Two Chicago bands won both opening slots at this year’s Lollapalooza festival at the Last Band Standing competition at Double Door in Wicker Park. Helicopters (at left), an electro-pop group, won the audience voting portion of the competition, while glam rockers Shockstars (at right) won the celebrity judging round. The band’s were ranked 3rd and 5th, respectively, in online voting heading into last night’s competition.

I stopped in last night and it appeared that Helicopters packed the place with every friend, acquaintance, and family member they had. Every third person was wearing a bumper sticker or t-shirt with the band’s name on it. The celebrity judges, who included Rhymefest and a non-Wentzian member of Fall Out Boy were ensconced in the upstairs bar, so I’m not surprised that the fuller sound and Adam Ant-style stage presence of Shockstars had an easier time reaching their eyes and ears than Helicopters’ nerdy charm and dance-y pop.

Shockstars will play Saturday morning on the MySpace mainstage at 11:30 while Helicopters will kick things off on Friday at 11:45 on the Citi sidestage (the over/under on the number of times you will overhear someone refer to it as the “Shitty” stage is five).

Photos via the band’s MySpace pages