Photos: Lollapalooza Day Four with The Arcade Fire, London Grammar, Joey Bada$$, Sofi Tukker & More

21 of 48 Lil Yachty at Lollapalooza, Grant Park, Chicago, IL, 8/6/2017

22 of 48 Lil Yachty crowd control at Lollapalooza, Grant Park, Chicago, IL, 8/6/2017

23 of 48 Lil Yachty crowd at Lollapalooza, Grant Park, Chicago, IL, 8/6/2017

24 of 48 Lil Yachty crowd at Lollapalooza, Grant Park, Chicago, IL, 8/6/2017

25 of 48 Lil Yachty crowd at Lollapalooza, Grant Park, Chicago, IL, 8/6/2017

26 of 48 Lil Yachty at Lollapalooza, Grant Park, Chicago, IL, 8/6/2017

27 of 48 London Grammar at Lollapalooza, Grant Park, Chicago, IL, 8/6/2017

28 of 48 London Grammar at Lollapalooza, Grant Park, Chicago, IL, 8/6/2017

29 of 48 London Grammar at Lollapalooza, Grant Park, Chicago, IL, 8/6/2017

30 of 48 London Grammar at Lollapalooza, Grant Park, Chicago, IL, 8/6/2017