The Coachella music festival has had the blogs going crazy the past few days, and Rihanna's performance was certainly one to talk about. The songstress surprised fans last night when she joined Calvin Harris during his set. The two performed their smash collaboration, "We Found Love," along with "Where Have You Been." Riri was also joined by her BFF Katy Perry during the festivities. Check out photos (via MissInfo) of Rihanna crowd surfing and getting close to fans in the gallery.