The Oscar-winning actress was "a dream to work with" on the movie - which tells the origins of 101 Dalmatians' villain Cruella De Vil - because she wouldn't turn down any requests for her hair and makeup. This was revealed by the film’s hair and make-up designer Nadia Stacey.
"Emma is a fun and down-to-earth girl and an amazing actress. She's really up for it and there wasn't a look we brought to her that she said no to.
"It helps when you're friends because you can say 'I don't think that's going to suit you' and she can say that back to me," she tells HELLO! magazine.
And Dame Emma Thompson, who plays Baroness von Hellman, was equally open to embracing anything the wardrobe department offered her.
Nadia adds: "We put this huge 18th-century wig on her head – she had to duck to get it into rooms – but she was totally up for it and embraced it, which was great."