There is so much beauty to behold in Hollywood, and sometimes there are stars who share the same looks. There are even some celebrity couples who could pass for twins. But then there’s the other extreme in which actual family members look nothing alike. Case in point? In our opinion, these celeb siblings don’t look related at all.

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Blake Lively and Robyn Lively
Sure, they're half-sisters, but there is zero resemblance between Ryan Reynolds' wife and sister-in-law.

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Julia Roberts and Eric Roberts
While they're both actors (and Eric is dad to actress Emma Roberts), these two don't look much alike.

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Maggie Gyllenhaal and Jake Gyllenhaal
Though they share baby blues and dark hair, she's all delicate features and he's scruff to the max (even without the actual scruff).

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Luke Wilson and Owen Wilson
They two actors seem more like dude bros than actual bros.

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Kate Hudson and Oliver Hudson
Both are gorgeous humans — but that's their only connection, appearance-wise. In fact, you might not have even known they were related.
You may also like: Excuse me, these stars are related?

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Rooney Mara and Kate Mara
They're both gorgeous, super-talented actresses — but that's where the similarities end.

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Austin Swift and Taylor Swift
While they may not look like exactly alike, actor Austin Swift and Taylor Swift are brother and sister.

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Bradley Cooper and Holly Cooper
The Oscar nominee looks nothing like his big sis. Or their mom (on the left).

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Shannon Leto and Jared Leto
The two brothers co-founded their band, Thirty Seconds to Mars, but their affinity for music (and not super-great fashion sense is where the commonalities end.
You may also like: 13 celebrities and their doppelgänger sons.

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Tallulah Willis and Rumer Willis
Rumer looks like Demi's twin, while Tallulah takes after dad Bruce. (FYI, their middle sister, Scout, looks a bit like both parents.)

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Zooey Deschanel and Emily Deschanel
OK, maybe they share a couple similar features (though not signature bangs), but that doesn't necessarily mean they can pass for siblings. Besties? Sure. Sisters? Not so much.

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Gisele Bündchen and Patricia Bündchen
Not only are these two sisters but they're twins. Fraternal, obviously, but still!
Related: 10 signs you're having twins.

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Michael Kutcher and Ashton Kutcher
Just like the Bündchen ladies, Ashton and brother Michael are fraternal twins. Oh, and speaking of twins ...

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Jessica Alba and Joshua Alba
Here's another case of a family of actors: Jessica's younger brother may not exactly like her, but he's an actor, too.

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Kevin Dillon and Matt Dillon
The only thing that gives away that they're brothers is their last names. That's it.

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Ben Lawrence, Jennifer Lawrence and Blaine Lawrence
You've probably wondered who the two dudes are that sometimes attend awards shows with her. They're her two older brothers. No, really.

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Mandi Gosling and Ryan Gosling
This brother and sister duo are both super-attractive; they just look nothing alike.

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Ariana Grande and Frankie Grande
Side to side (sorry, had to) there are a couple similarities (hopefully not breakups, though) but for the most part, the half-siblings have totally different looks.

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Beanie Feldstein and Jonah Hill
This sibling duo doesn't look much alike, but they are indeed brother and sister. While we generally know him as "Jonah Hill," his name is actually Jonah Hill Feldstein — he shares his last name with his younger sister, Booksmart actress Beanie Feldstein.

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Prince William and Prince Harry
When it comes to their looks, Will and Harry don't share a lot of similarities.
You may also like: Vanity Fair digs deep Into Prince Harry and Prince William’s royal rift.

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Dennis Quaid and Randy Quaid
Two brothers couldn't look or be more different.
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