It seems like Emma Watson really took after her character as Hermione. Not only did she remember her own lines from the movie, she also managed to memorise the lines of co-stars Daniel Radcliffe and Rupert Grint!
Harry Potter and the Philosopher's Stone director Chris Columbus noticed that she would be mouthing her co-stars lines during takes, and consequently had to stop filming!
During an appearance on Jimmy Kimmel Live!, Emma was reminded of her bad habit as the comedian showed a clip of her mouthing Radcliffe's lines during a scene read when she was 10.
Now 26, a red-faced Emma said, "This is actually quite traumatic for me because I created issues because of this... I would ruin takes. Chris would be like, 'Cut! Emma, you're doing it again. You're mouthing Dan's lines!'"
Emma was such a fan of J.K. Rowling's books that she had most of the dialogue lodged in her memory and couldn't help herself when it came to miming along with her castmates.
"I'd be like, 'Oooh, I'm so sorry, so sorry. Oh, I feel so bad'. But I couldn't help myself."
"I was such a loser, I really loved those books," she added. "I really wanted to do my job well, and I kind of overdid it."
We're kind of glad you did Emma, you were the perfect Hermione!