Like clockwork, celebrities flock to the California desert every April for a weekend (or two) of sun and outdoor concert-hopping at Coachella . Yes, festival season has officially arrived and, if the flood of palm trees and private jet interiors on your feed is any indication, the most excitable A-listers have already started to trickle down to the valley. Even better, judging by their first round of Instagram posts, this week is going to be full of next-level looks.