Just Harry Potter fandom

Wait.....what?

Before shooting, Emma Watson acted out the scene, so Helena Bonham Carter could mimic her facial expressions during he actual filming.

So, technically;
This scene is Helena Bonham Carter,
Pretending to be Emma Watson,
Pretending to be Helena Bonham Carter,
Pretending to be Hermione,
Pretending to be Belatrix.

There is a picture the soz if you can't see it but basically it's the part where Hermione pretences to be Belatrix in HPatDH