Apparently I’m the Grimm’s Fairytale it is Mirror, Mirror so I guess they’re both right
It's funny, I never read that story but I saw the movie when I was a kid and I still remember mirror mirror on the wall. I do not believe we all share different past realities, not even a little bit, but the Mandela Effect is an interesting phenomenon. Whatever the cause.
The Mandela Effect
• Collective false memory: This mix-up is a classic example of the Mandela Effect, where a large group of people misremembers a famous quote because a book, song, or oral retelling differs from the original source material.
• Mixed media: Official merchandise, older storybooks, and subsequent adaptations sometimes even mixed the two up internally, reinforcing the "mirror, mirror" phrasing in popular consciousness.