Eminem Brought Out Rihanna at Lollapalooza 2014

Eminem headlined Lollapalooza tonight, and he surprised the audience by bringing out Rihanna. The two performed "Monster," "Love The Way You Lie," and "Stan" together. This serves as a preview for the upcoming Monster tour which will begin next week at the Rose Bowl. Aside from the special guest, Em's set in Chicago included a mix of his classics and songs off his latest album,The Marshall Mathers LP 2, such as "Rap God" and "Berzerk."