You'll Be All Shook Up Over Kaia Gerber's Surprise Cameo in Austin Butler's Steamy Photo Shoot

Kaia Gerber models silk boxers, high boots and sunglasses for French fashion house Celine

Kaia Gerber cuts a casual figure in denim shirt and trousers for shopping outing in New York City

Kaia Gerber is all legs in tiny spandex shorts and crop top as she plugs into her headphones