The Brief Lollapalooza continues for a fourth and final day in Grant Park on Sunday. Festival organizers are still reminding attendees about bag rules, hydration and weather safety. Lollapalooza continues with its fourth and final day in Chicago's Grant Park on Sunday, with Tate McRae and The xx headlining. Festival organizers are reminding fans to follow entry rules before heading to Grant Park. Traffic and transportationMore Information:Several streets surrounding Grant Park are closed for the festival, and heavy traffic is expected throughout the weekend.