In Harry Potter and the Deathly Hallows — Part 1, Harry’s friends take the Polyjuice potion, turn into him, and wear his clothes. Daniel had to work hard to learn the characters’ mimics and behavior. And when Harry was Fleur, the actor needed to undo his bra very fast — and he couldn’t do it with one hand. To get the perfect shot with 7 Harries, they ended up having to do 90 takes!