Even celebrities like to dress down sometimes - including Natalie Portman. Though it can be hard to make casual outfits look effortless, the actress mastered low-key dressing for warmer months with a popular pair of chunky walking sneakers. The Oscar-winning star opted to step out in a pair of all-black kicks from French brand Hoka, known for its range of comfort-focused athletic shoes. Though Portman's GTX Clifton 9 style is sold out, its upgraded, nearly-identical silhouette can be found in Hoka's Clifton 10.