12 Celebrity Pairs Who Surprisingly Double As Both Siblings And Co-Stars

It's hardly fair to have all that beauty in one place, so Kate and Rooney have barely shared the spotlight together (though if they did, we're pretty sure our TVs would explode). But if you look closely in "2005's Urban Legends, Bloody Mary," you'll see Rooney play 'Classroom Girl #1' alongside Kate, who plays lead protagonist, Samantha. 

Best known for his role in "Empire" as Jamal Lyons, Jussie Smollett is a proud brother to Jurnee, who's had stints on popular TV shows like "Full House," "Friday Night Lights" and "True Blood."

The two will share the screen for the first time in 20 years (their last onscreen run-in was in "On Our Own) on WGN America's new show "Underground." This insanely addictive historical TV drama that follows a kickass cast, running to freedom on the Underground Railroad. So, basically two of our favorite new shows in one place? Yes, please.

Pictured in the middle of his two famous brothers, Andrew Wilson is the lesser-known of the Wilson clan, but he turns up in almost any movie starring Owen or Luke. He's appeared alongside Owen in movies like "Hall Pass," "The Big Bounce," and "Zoolander," and alongside Luke in  "Rushmore," "Idiocracy" and both "Charlie's Angels" films.

Owen and Luke have worked together without Andrew in "Around the World in 80 Days" and "The Wendell Baker Story" (Andrew co-directed the latter with Owen), and all three brothers were in "Bottle Rocket" and "The Royal Tenenbaums." 

They must really like each other. 

Hermoine's insanely good looking real life brother played an extra in the first two Harry Potter films (you'll see him as a blonde-haired Hogwart's student). More recently, they've appeared together in a Burberry Fashion photoshoot,  just like any other over brother-sister duo 

In their younger days, Jake and Maggie Gyllenhaal co-starred  in "Homegrown" and "A Dangerous Woman," both directed by father, Stephen Gyllenhaal. A few years later, they played brother and sister in "Donnie Darko."

OK, so we're stretching this one a little bit , but Quincy Jones' two beautiful daughters, Rashida and Kidada, kind of appeared together, as vocalists in a tribute song to Tupac Shakur, who was engaged to Kidada at the time of his death. Their brother, Quincy Jones III, produced the song, and Quincy Sr. himself recites the lines of Shakur's poem, "Starry Night," during the intro. 

Boston brothers Casey and Ben Affleck have both appeared in "200 Cigarettes," "Chasing Amy" and "Good Will Hunting," and Ben directed Casey in "Gone Baby Gone." 

Ben also met future ex-wife Jennifer Garner (sad face) when they co-starred in "Daredevil," and Casey once starred with his future brother-in-law Joaquin Phoenix in "To Die For," and later directed him in "I'm Still Here."

The Cusacks come from a line of talented thespians: Father Dick Cusack was an actor/filmmaker, while John and Joan's other siblings -- Ann, Bill and Susie -- are also actors by trade. But the two most famous Cusacks share a special bond in the limelight. Joan has appeared in 10 of John's movies, including "Sixteen Candles," "Say Anything...," "Grosse Pointe Blank" and "High Fidelity." Even their father Dick had a small role in "High Fidelity" as a minister. 

So, like, can we come over for dinner sometime? 

Brothers Charlie Sheen and Emilio Estevez have co-starred with each other, or their father Martin Sheen, in several productions. Some standout joint efforts include, "Young Guns" and "Men at Work." All three actors appear in "Badlands," in which Martin Sheen stars and Charlie and Emilio are credited in small roles as "boy[s] under lamppost."

Dakota's younger sister Elle's acting career started when she was only 3, when she played the younger version of Dakota's character Lucy in "I Am Sam." Elle also played a younger Dakota in "Taken." Since then, she's ditched the mini-sister role and nabbed leading spots in "Super 8" and "Maleficent." 

You probably knew Leslie Mann (left) has played supporting roles in movies like "Knocked Up," "Funny People" and "This Is 40," all of which were written, produced and directed by husband, Judd Apatow. But as an adorable extra trivia point, her real-life daughters Iris and Maude Apatow (front left, front right) have also appeared in those three films, each time playing her on-screen children. D'awww. 

Because again the world is a cruel and unusual place, somehow Monia and Penelope Cruz are equally gorgeous sisters who are both talented dancers/actors. Monica acted as a stand-in for long distance shots in "Pirates of the Caribbean: On Stranger Tides," since Penelope was pregnant. Seriously, they look SO much alike.