Pop music stars Sabrina Carpenter and Justin Bieber are set to headline the Coachella music and arts festival in Indio, Calif., next April. The lineup will also feature Karol G, The Strokes, Iggy Pop, FKA twigs, Young Thug, and Addison Rae. The festival will take place over the consecutive weekends of April 10 and 17, with tickets going on sale Friday.