Last week it was rumored that Eminem would be the Lollapalooza headliner. The annual Chicago festival has officially announced their line-up today, and lo and behold, Eminem is a headliner, alongside, unsurprisingly, OutKast.

This is just another notch in OutKast's 40-date festival run this year. Kings Of Leon will also be headlining, while other rap acts include Childish Gambino, Vic Mensa, Nas, Chance The Rapper, Iggy Azalea, as well as Lykke Lii, Jhene Aiko, Flume, Rich Homie Quan, Lorde and plenty more.

You can view the full line-up in the gallery above. Will you be attending Lollapalooza this year? Let us know. The event goes down on August 1st-August 3rd in the Chi, and tickets are currently available here.