Ireland Baldwin, Ashley Madekwe and Riley Keough turned out to the sprawling Merv Griffin Estate in La Quinta.
VIP guests included Steven Tyler, Kelly Osbourne, Kellan Lutz, Joe Jonas, Lance Bass and Jared Leto.
Delevingne celebrated her bachelorette party (dubbed “Popchella”) amidst the Coachella bacchanalia.
The company will provide round-trip, door-to-door car and ferry service.
It takes technology plus a human touch to ignite the customer experience, said executives at the 10th-annual Global Retailing Conference in Tucson last week.
The designer, with honorary cochairs Amy Adams and Darren Le Gallo, welcomed 1,500 guests to the fund-raiser on Sunday afternoon.