Gigi Hadid & Alli Simpson Get Their Sonix Fix at Just Jared's Festival Party!

Gigi Hadid shows off her toned midriff while stopping by the Just Jared Festival Party presented by Sonix on Saturday (April 11) at a private residence in La Quinta, Calif.

The 19-year-old model was joined at the event by her boyfriend Cody Simpson‘s sister Alli, who showed off her brand new festival-themed Sonix phone case at the event.

Model River Viiperi came dressed ready for the pool party, showing off his toned body in his neon colored outfit.

FYI: Gigi is wearing an Asos tank, H&M shorts, Express necklace, feather arm cuff, and Tkees sandals. Alli is wearing Komono sunglasses.

25+ pictures inside of Gigi Hadid and others at the party…