Athleisure isn't usually sophisticated, but Cameron Diaz is making Us reconsider that. Running errands with her boo, Diaz rocked chic white sneakers that elevated her entire outfit. The secret? Knit detailing. And we found the classy, expensive look for under $40. Diaz styled her sporty kicks with a white tee, an oversized blazer and joggers, tying it all together with a belt bag. The sneakers made her entire outfit look polished, all because of the knit upper that reads more 'downtown cool' instead of 'weekend errand.' We're copying Diaz's effortlessly refined aesthetic all spring and summer.