This year's headliners include Charlie XCX, Tate McRae, Lorde, Olivia Dean, John Summit, Jennie, The Smashing Pumpkins and The XX.
The full Lollapalooza lineup drops Tuesday!
The festival returns to Grant Park from July 30 through August 2.
Last year's headliners included Luke Combs, Tyler the Creator, and Sabrina Carpenter.
Chicago saw record-breaking hotel stays last summer, thanks in part to Lollapalooza.
Choose Chicago reports people booked 3.56 million rooms from June through August, generating $949 million in revenue.