The Sara Donaldson Guide to Style
You know fashion blogger Sara Donaldson as the minimalist behind fashion blog Harper and Harley, and chances are you're even one of the 488,000 people who obsess over her pared-back, black, white, and grey style on Instagram. Now, the 26-year-old blogger--who's worked with brands like Gucci, Estée Lauder, and Mercedes-Benz--is launching her own online store; The Undone.…