Kristen Stewart

Evan Agostini/Invision/AP

Kristen Stewart is lurking around on Instagram, possibly posting pictures of delicious, colorful meals and filtered selfies. But just try and find her.

And if you talk to her about it, don't call it "social media."

"I have a private Instagram so I can keep in touch with my friends because I'm always away,"  the 24-year-old Twilight alum told USA Today earlier this month. "That's not social media. We have a shared photo stream."

So for Stewart, Instagram, check. Facebook? Nope. Although there are many fan pages for her there. And Twitter...well, when it comes to Twitter, she's unlike most celebs her age. She's more like Keira Knightley—she just can't even.

"What would I tweet about? Who are you talking to? What are you saying?" Stewart told USA Today. "Imagine sitting here right now and thinking, ‘That's a good thing to say to the world?' I can't even understand it."


Knightley, 29, used to have a Twitter account. It lasted less than a day.

"‘I did actually join Twitter for about 12 hours because I tried to be down with the kids and it just creeped me out," the U.K. newspaper The Daily Mail quoted her as saying in a recent interview on The Jonathan Ross Show.

She has talked about her short-lived foray into the Twitterverse in the press several times, including in interviews with the U.K. newspaper The Telegraph earlier this month and the magazine Harper's Bazaar U.K. that was posted in December 2013.

Prince Harry, 30, in July expressed his distain for Twitter, adding that he used to be on social media. Two months earlier, he did sign off on his first personal tweet, which was posted on the official page of the Invictus Games, which he attended in September.

Other stars have popped in and out of the social network, including Miley Cyrus, 21, troubled actress Amanda Bynes, 28, Chris Brown, 25, and Alec Baldwin, 56.

Supermodel Chrissy Teigen, 28, became one of the most popular celebrities on Twitter this year due to her hilarious jokes, acute observational humor and...continuous photos of delicious-looking food. She recently took a brief hiatus from the social network following a backlash over tweets she made about the recent shooting in Ottawa, Canada.

"I feel sick. Bye Twitter. Taking my talents to instagram," she said.

On Friday, she started tweeting again, just in time for Halloween.

"I meant to post that just to insta but accidentally linked to twitter," she said. "It's like when you are trying to silent treatment someone and f--k up."

Then she appeared to just go with it.

I feel like kids will benefit and learn a lot more if I hand these out tonight

A photo posted by @chrissyteigen on

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