You might want to sit down for this one.

Sanrio has revealed Hello Kitty — the supposedly adorable feline character that adorns everything from lunch boxes and toasters to t-shirts and lingerie — is, in fact, not a cat. We repeat NOT A CAT.

Just what is Hello Kitty, you’re asking?

Hello Kitty is a human girl (and a British one at that), Christine R. Yano, the author of “Pink Globalization: Hello Kitty’s Trek Across the Pacific,” told The Los Angeles Times.

“Hello Kitty is not a cat. She’s a cartoon character. She is a little girl. She is a friend. But she is not a cat. She’s never depicted on all fours. She walks and sits like a two-legged creature,” Yano explained to the Times.

And if you are ready for your mind to be just a little more blown, the character we all know as Hello Kitty is actually Kitty White – a Scorpio who loves apple pie, and is the daughter of George and Mary White.

“She has a twin sister. She’s a perpetual third-grader. She lives outside of London. I could go on. A lot of people don’t know the story and a lot don’t care,” Yano told the paper.

For more on Hello Kitty, head over to the Los Angeles Times.