Rarely does a week go by without a Kate Middleton outfit sighting the world instantly wants to copy. And while we now scramble to pick up her exact Zara coats or a close imitation of her best dresses, Middleton’s fashion choices themselves appear to be inspired by another member of the royal family: the late Princess Diana. Over the years many have inferred that the Duchess of Cambridge’s wardrobe has paid homage to her late mother-in-law, with some instances being more obvious than others. Whether it be a single similar item or a piece-for-piece re-creation, some of Middleton’s best looks make us reminisce about Princess Diana’s iconic stylebook. The two women favored different designers—Kate is partial to Alexander McQueen and Erdem, while Princess Diana leaned into David Sassoon and Bruce Oldfield—yet both women’s tastes include crisp coats, pastel suits, and dazzling formal wear. Here we gathered the 15 instances of straight-up fashion twinning, courtesy of Kate Middleton and Princess Diana.