Princess Kate Middleton is embracing the end of summer with even blonder hair. The Princess of Wales, 43, showed off her lighter tresses while riding in a car with Prince William on Sunday, August 24, leading many to speculate she freshly colored her mane and opted for a new honey-inspired hue. Hairstylist Sarah Gadsdon predicted that Kate's new look was thanks to her spending time out and about in Greece, per The Daily Mail. "After a sun-soaked holiday in Greece, Kate returned not only with a refreshed spirit but also with naturally lightened hair," the stylist explained.