14 Sets of Celebrity Siblings You Didn't Realize Aren't Twins

1 | Elle and Dakota Fanning

Actor sisters Dakota and Elle Fanning look so much alike—and have since childhood—that they've even played the same character. In 2001's I Am Sam, Elle, who's four years younger, played Dakota's character at an earlier age. The pair both have thriving, separate careers these days, with Elle starring in The Great and Dakota in The Alienist, but it still takes us a moment to tell them apart when they're standing side by side.

For more stars who've been acting since they were young, check out The Biggest Child Actors Ever, Then and Now.

2 | Scott and Chris Evans

Chris and Scott Evans not only take after each other, they also chose the same career. Scott, who's two years Chris's junior, had his big break on One Life to Live and currently plays Oliver on Grace and Frankie. He and his Marvel actor brother are super close and have always been supportive of each other, as you can see from this throwback picture Scott posted of his big brother coming to see him in his school musical.

3 | Chloe and Halle Bailey

Chloe and Halle Bailey, who record their music under the name Chloe x Halle, are so similar-looking that they convincingly play twins on the show grown-ish. This has proven to be confusing to fans who just assume that the sisters are also the exact same age, but, in fact, there's two years' difference between them!

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4 | Owen and Luke Wilson

Owen and Luke Wilson are easy to tell apart due to their hair colors, but there's a remarkable family resemblance in their faces. Owen, of Zoolander and Midnight in Paris, is older than Legally Blonde star Luke by three years. Their other brother Andrew Wilson is the oldest. All three of them have collaborated several times, including on the movies Bottle Rocket, Rushmore, and The Royal Tenenbaums. And for more low-key celebrity siblings, check out Celebrity Siblings You Totally Forgot About.

5 | Penélope and Mónica Cruz

You really have to wonder how often Penélope and Mónica Cruz get mistaken for the other. (That's Penélope on the left in the photo above, just in case you were already struggling.) Mónica is the baby sister of the Volver star by three years, and she's also an actor, designer, and dancer, who trained at The Royal Academy of Dance.

6 | Chimene and Cameron Diaz

Chimene Diaz is big sister to The Holiday and Charlie's Angels star Cameron Diaz, but they really could be twins with their blue eyes and identical smiles. And for more on what the younger Diaz is up to these days, check out Cameron Diaz Reveals Whether or Not She'll Act Again.

7 | Beyoncé and Solange Knowles

Beyoncé and Solange are such big stars that there can't be many people who don't already know who they are. But if the siblings, who are separated by five years, weren't famous for their own musical endeavors, they'd probably get mistaken for twins more often.

For famous friends who had big falling outs, check out Former Celebrity Best Friends Who Barely Speak Anymore.

8 | Mamie and Grace Gummer

Mamie Gummer, 37, you know from The Good Fight, The Right Stuff, and Ricki and the Flash. Grace Gummer, 34, you know from Mr. Robot, The Newsroom, and American Horror Story: Freak Show. And you know them both for being the acting offspring of Hollywood institution Meryl Streep. Their other siblings Henry Wolfe Gummer and Louisa Gummer are a musician and a model, respectively. And for more stars with super famous moms and dads, here are 25 Celebrities You Didn't Know Had Famous Parents.

9 | Mark and Donnie Wahlberg

Mark and Donnie Wahlberg have been lookalikes since before they both found fame as teenagers. Blue Bloods actor and New Kids on the Block member Donnie is older than Boogie Nights and The Departed star Mark by two years. They both partnered with their eldest brother, chef Paul Wahlberg, to open up the fast food chain Wahlbergers and to launch a reality show of the same name. The fourth Wahlberg brother, Robert, was born between Paul and Mark and is also an actor.

For stars you didn't even realize were related, check out 17 Celebrities You Didn't Know Were Siblings.

10 | Zooey and Emily Deschanel

If it weren't for the few inches of height older sister Emily Deschanel has on Zooey Deschanel, it would be tougher to tell these actor siblings apart. Both women also found similar success on TV: Emily on the long-running procedural Bones and Zooey on the beloved sitcom New Girl.

11 | Jaden and Willow Smith

It's not just their features that make it a dead giveaway that Jaden and Willow Smith are siblings—it's also the daring sense of style that they both share. Jaden is two years older, but, if we didn't know that, we'd guess that they were twins.

12 | Christian and Neve Campbell

Brother/sister pair Christian and Neve Campbell are the spitting image of each other, and they also share a love of performing. Older brother Christian has appeared in Supernatural, True Detective, and Big Love, while Neve will be returning to one of her most popular roles, that of Sidney Prescott, when the Scream franchise returns to theaters next year.

13 | Haylie and Hilary Duff

Haylie and Hilary Duff were born just two years apart and share an interest in music and acting, so it's no wonder they're so tight-knit. They've worked together on several projects, dating all the way back to Haylie having a recurring role on Hilary's hit Disney Channel show, Lizzie McGuire. And for more House of Mouse graduates, check out The Biggest Disney Channel Stars, Then and Now.