On the heels (or should we say flats?) of Miranda Kerr’s recent Birkenstock-styled outing, Naomi Watts was snapped rocking her own two-strap buckled slides.

From her breezy blouse and her 3×1 distressed denim cut-offs right down to her black-on-black Birkies, we can all agree that Watts’s off-duty ensemble is the true embodiment of the happy-go-lucky relaxed Californian lifestyle.

With the rise in the “athleisure” movement and the demand for functional fashion, we’re expecting more stars to step up their comfort game. Take a look at the stars who are already on board with the trend.