The most chaotic Coachella 2026 billboards were placed along Interstate 10 to Indio, California, ahead of the festival's official opening ceremony. These include Ethel Cain's eerie billboard, which read "Go see Ethel C. or the Devil will get you," and Major Lazer's cheeky Ozempic joke. Other performers included Ciara Mary-Alice Thompson, Addison Rae, and Karol G. The global girl group Katseye also featured two different billboards, one featuring Mona Lisa and another featuring the words "Sahara's Gnarly" and another referencing their hit singles. Colombia's Karolina G, the first Latina artist to headline Coacheilla, also included 10 billboards commemorating her sets.