Maintaining a blond mane requires constant touch-ups to keep root growth at bay, but the stars are keeping their hair color relaxed this Summer with a surprising trend: visible roots. Kate Hudson was out in London last week for the Novak Djokovic Foundation gala wearing her blond hair in a loose updo. The pulled-back style showed off her natural, darker hair color at her roots. Last night, actress Vera Farmiga hit the red carpet for The Conjuring with a sleek, deep side-parted hairstyle, which showcased her darkened roots that were tucked behind her ear. And Julianne Hough's two-toned hair color looked edgy and intentional with chunky, textured strands, while Blake Lively's golden blond waves looked completely effortless and beachy with her grown-out roots. Clearly Hollywood is taking a break from hair color appointments, but what do you think of this trend?