▲Ever since the Olsen twins made a name for themselves in the fashion industry, it seems like they lost all their facial muscles.

▲Has anybody ever have seen their teeth on the red carpet? If so, you're very lucky!

▲It is rare to see Leo smiling on the red carpet—even at the Oscars. But the man has been in front of cameras almost his entire life, maybe he just needs a break?

▲Her beauty alone is a blessing on the red carpet, so asking her to smile would be too much for us to take.

▲Posh Spice is known for her "resting b***h face," which became part of her branding. When asked why she never smiles, she simply answers: "I'm smiling on the inside, I feel like I have a responsibility to the fashion community." Well, that must be a heck of a responsibility!

▲Another actor who has been in the film industry nearly his entire life, and who clearly is tired of posing in front of hundreds of photographers.

▲You see this face? That's pretty much the face Keira Knightley has every single time she walks on the red carpet.

▲With everything that has been going on in Johnny Depp's personal life these past few years, it is quite comprehensible why he looks so moody lately.

▲Okay, first of all, he's James Bond. Secondly, James Bond doesn't smile. Period.

▲Besides the fact that she's a successful actress, Kristen Stewart is also notorious for her expressionless face. In 2015, she told Jimmy Fallon that she can smile—but not on command.

▲And since Kristen and Robert wish they weren't there anyway, maybe they can also take Edward Norton with them. The man always looks like he'd rather be on his couch watching Netflix and chilling.

▲But whereas Victoria actually looks classy when she doesn't smile, West on the other hand might look a little bit cooler if he smiled more and tweeted less...

▲On the runway or on the red carpet, Bella Hadid often shows up with an impassive expression and can come across as a cold person. In an interview with The Guardian she explains: "People meet me sometimes and say: 'You’re so different to what I expected.' People always tell me I seem mean or intimidating on social media. But I really love engaging with new people." She also explained why she doesn't laugh as much in front of the camera: "I feel uncomfortable, sometimes, smiling in front of the camera. It actually took me until probably this year to really understand my face."

▲If there was anything such as a "smile-or-die policy" on the red carpet, Lorde would have passed away several times over!

▲Rooney Mara told Vogue that she doesn't like to "fake smile": "Why should I 'fake smile?' It feels disingenuous to me. I want to smile when something happy happens, so if I do smile, you know it’s real."

▲Megan Fox has mastered the "non-smile" pose to perfection, and definitely deserves a spot on this list. According to some, it is due to the fact that she used to wear braces when she was a teenager, and therefore doesn't feel comfortable showing her teeth.

▲When the rapper poses for photographers, it is never without his "me-against-the-world" face. Eminem always keeps a deadpan expression no matter what.

▲The "Kaiser" of fashion was known for his black and white outfits and impassive expressions, which made him look pretty intimidating.

▲Ed Westwick doesn't smile much on camera, but often shows a little smirk. That reminds us a lot of his character in 'Gossip Girl,' Chuck Bass.

▲Ben Affleck used to smile more in photos when he was younger. Nowadays, it has become harder and harder to catch him grinning from ear-to-ear.

▲Robert Pattinson and Kristen Stewart have a lot of things in common. In addition to the fact that they're exes and acted in the same movie, they always look like they'd rather be somewhere else when they hit the red carpet.

▲The singer of 'Poker Face' lives up to her lyrics. Although she's been smiling more often since she won an Oscar.

▲The French actress often shows a shy smile on the red carpet, but will rarely show you all of her teeth.

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Jake Gyllenhaal hardly ever gives a smile, and prefers to keep things cool on the red carpet.

▲Unlike her character in 'Gossip Girl,' Taylor Momsen comes across as more unfriendly when she poses in front of the camera. The actress-turned-rock-singer always keeps a straight face.

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There are two kinds of people in this world: people who smile from ear-to-ear and those who laugh on the inside. The same goes for celebrities, and a lot of them find it just unnecessary to flash their pearly whites when posing on the red carpet.

From Victoria Beckham to Leonardo DiCaprio, these are the celebs that (almost) never crack a smile in public.

▲Vogue's editor-in-chief Anna Wintour gives rare smiles in public. Always spotted with her dark sunglasses and her notorious bob (that she has had since the age of 14), she comes across very serious and distant.

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Reynolds rarely exposes his front teeth in front of the cameras. "That’s a problem I’ve had all my life," the actor admitted to EW. "If I’m not aware a photo is being taken, my natural resting face is one of a man dying."

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Kim doesn't crack a smile either when she walks the red carpet.