In Carla Sozzani's new memoir-meets-catalogue, 10 Corso Como: A to Z, the gallerist and former fashion editor tells the story of her Milan superstore, from its conception in an old garage to its rise to global stardom and its recent cross-continental expansion. Of course, her tale wouldn't be complete without the mention of her sister, Franca, the longtime editor-in-chief of Vogue Italia, with whom she is often spotted. With their powerful presence, identical blonde waves, and rigorously makeup-free faces, the pair could almost pass as twins-and they aren't the only siblings who share the same beauty sensibility. Good genes, a collective framework of references, and the everyday bonds of sisterly affection have resulted in more than a few striking resemblances.

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Over the years, the pressed debutante waves of Jacqueline and Lee Bouvier and the Gallic charms of Catherine Deneuve and Françoise Dorléac have become iconic. More recently, it's been the swingy brunette manes of Kate and Pippa Middleton that have captured the world's attention. From Mary-Kate and Ashley Olsen's untamed brows and honey-colored hair to the matching rumpled good looks of Charlotte Gainsbourg and Lou Doillon, these sister duos prove that beauty is all in the family.

Click through our slideshow above to see our favorite sister pairs.

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