It finally happened, folks: Kaia Gerber officially ditched her signature light brown hair for an unexpected sunny blonde hue that screams "surfer girl." Gerber debuted her new look over the weekend in a chic-as-hell Instagram selfie with her hair worn deliberately messy and falling halfway in her face. Of course, it didn't take long for the star's fans and friends to go wild in the comment section over her major makeover.