Of course you know that Beyoncé has Solange and Kendall has Kylie, and you're well aware that Mark and Donnie are totally bros and that Ashton Kutcher has a fraternal twin. But did you know that there's a third Franco brother? And a third Delevingne sister? Scroll through for the celebrity siblings you knew about, as well as a handful that may come as a surprise.
Celebrity Siblings You Probably Didn't Know About
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