80+ Celebrity Siblings, From the Hemsworths to the Cyruses

Both TV and film actors, Kate and her younger sister, Rooney, are equal parts incredibly talented and impeccably chic. Kate has been on the small screen in "House of Cards" and in films like "Brokeback Mountain" and "127 Hours." Rooney is best known for her roles in "The Social Network" and as Lisbeth Salander in the big-screen adaptation of "The Girl With the Dragon Tattoo."