Alexander Wang co-hosts the H&M Loves Music party at the Coachella Valley Music and Arts Festival on Saturday. (Mike Windle / Getty Images for H&M)
Kate Bosworth (Mike Windle / Getty Images for H&M)
Mamie Gummer and Andrew Bevan. (Mike Windle / Getty Images for H&M)
Iggy Azalea performs (center) at the party. (Mike Windle / Getty Images for H&M)
