1. When Billie Eilish was on Jimmy Kimmel Live, during a segment quizzing Billie on things from the '80s, the host asked her if she could name any member of the band Van Halen, and she responded, "Who?"
2. Billie also seemingly didn't know who Hilary Duff was after she was gifted a Lizzie McGuire sleeping bag during an interview.
3. Despite the fact that they both have a partnership with Dunkin', Charli D'Amelio couldn't identify Ben Affleck during Vanity Fair's lie detector interview conducted by her sister Dixie, until Dixie said he was "married to Jennifer Lopez."
4. Speaking of Bennifer, one of the most iconic instances of a celebrity claiming not to "know" another celebrity is Mariah Carey continually saying she doesn't know Jennifer Lopez.
6. It's hard to forget the viral moment where Jerry Seinfeld turned down a hug from Kesha at a red carpet event, which she calls the "saddest moment of [her] life." From Jerry's perspective, it wasn't personal — he just didn't know her. "When you get to be my age and you’ve done a couple things, you have your own reality, in my reality," he told Extra, "I don’t hug a total stranger. I have to meet someone, say hello. I gotta start somewhere. I’m 63, I don’t know every pop star. I don’t know everyone."
7. When Halsey headlined at a DKNY 30th birthday event, Donna Karan herself didn't exactly know who they were. "Who is Halsey? Is that Halsey?" Donna reportedly asked a Page Six reporter, pointing at someone who was (lol) not Halsey. "I think my granddaughter does [know who she is]. I’m sure she’s great."
"I had no idea who he was," she told BuzzFeed News about the whole situation. "I didn't know at all, and he was so mad at me. But then he saw all the attention he got, so now he loves me. He calls me, and he emails me. But I had no idea because I had never watched the Kardashian program. … I didn't know he was part of the coterie of people who hang out with her. Now I know — big time!"
9. In 2015, Justin Bieber was asked about Shawn Mendes during an interview, and famously responded, "Who's Shawn Mendes?"
Eventually, that changed, of course, and the two even collaborated in 2020 on "Monster." In fact, at the time Justin (jokingly this time) resurfaced the clip and tweeted, "Who's Shawn Mendes?"
10. When Khloé Kardashian asked Kourtney if she would take business advice from "this person" and showed her a picture of Amazon CEO Jeff Bezos, Kourtney couldn't even identify him.
11. And, finally, the Vanity Fair lie detector interview that became an iconic meme — when Keke Palmer was asked if her character True Jackson was a better VP than Dick Cheney and Keke had no idea who he was.
