"It was super exciting. Everything was so fun," Fanning, who plays Princess Aurora in the film, told Us Weekly. "Working with Angelina -- it's kind of a dream to say that you even met her and let alone to be in scenes with her. [It] was really really cool."
"She really got into her character in a way," Fanning continued. "Like she was very, so into the details of her clothes. She came into rehearsals on the first day with her Maleficent staff and she was in normal clothes but then had that. She was like, 'I have to get used to it. It's part of my character.' I thought that was so cool."
Jolie has previously said that she went a bit "nutso" while preparing for her role as the Disney villain.
"I did have to take my staff home to practice walking with it in my cloak," she said in the March issue of Entertainment Weekly. "Then I would go outside and scream at the bushes to expand my voice and play with my voice. So, mom was a bit nutso for a period."
Maleficent will be released on May 30.