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Day-By-Day Lollapalooza Lineup Announced Today, With Ariana Grande, Childish Gambino And The Chainsmokers HeadliningThe day-by-day breakdown for 2019 Lollapalooza was announced Wednesday, giving Lolla-goers a better idea of which days to hit the four-day music fest in Grant Park.

2019 Lolla Lineup Announced: Ariana Grande, The Strokes, Childish Gambino To HeadlineAriana Grande, Childish Gambino and The Chainsmokers are set to headline 2019 Lollapalooza.

"The Chainsmokers" Crash Huntley High School's Prom"The Chainsmokers" crashed Huntley High School's prom on Saturday night at the Hyatt Regency in Rosemont.