Alex and Emma Watson
Did you know that Emma Watson has a brother? And on top of that, did you know the two of them look almost exactly alike? The same goes for a handful of other celebrities, and whether they're siblings you never knew existed or a part of Hollywood families you've been seeing around for years, there's no denying their jaw-dropping physical similarities. From Emma and Alex Watson to Meryl Streep's daughters, and more familiar faces, keep reading to see every set of stars who could pull a faux-Sister, Sister if they wanted to.