With the birth of Knox Leon and Vivienne Marcheline Jolie-Pitt, the sisterly Simpson bikini competition and the recently revealed unique bond between the Gyllenhaal duo, it's time to pay tribute to some of Hollywood's favorite siblings.
They may have a love/hate relationship, but the strong bond of blood and fame can never be broken.
Click through our countdown of celebrity siblings, ordered from most conventional to most... just say experimental.
Who is the weirdest pair?
Tell Us / Who is the weirdest sibling duo?

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Uh, the Deal sisters? Anyone?
this is actually a good pic of haylie.