Jessie J, Lupe Fiasco, Mike Posner And More Rock Chi-Town (PHOTOS)

Erika Brooks Adickman / May 19, 2011

Jessie J seemed surprised at the massive turn out for KISS FM’s Fantabuloso Dos concert last night, tweeting: “Amazing show in Chicago. I was told it was an intimate gig to 500 peeps. 12,000 maybe?? And first on! Oh i love a challenge. Haha.” Naturally, Chi-Town’s All State Arena was packed — fans were clamoring to see the amazing pop star round up which included MTV Movie Awards performer Lupe Fiasco, David Guetta, Pitbull, T-Pain, Mike Posner, Tinie Tempah and our pals Far East Movement who rocked the crowd with “Girls On The Dance Floor”. Check out the highlights from the Windy City show.