PS: Is there a significance to the colour palette in the film — specifically with the addition of yellow, including Robbie's final noteworthy sundress, and the blue that complements the classic Barbie pink?
JD: In that final scene, what I wanted to achieve was for the actors to tell me what their Barbie's character was. So, what would that character wear? Each Barbie had more freedom to think up what the look would be for their Barbie. And for Barbie Margot, at that moment, she's really becoming human, so the idea was that her dress was much softer than her previous looks. It's a bias-cut dress, which means that it drapes, and none of Barbie's previous clothes have ever draped. I asked Mattel what the most popular contemporary dress was that Barbie ever wore, and their biggest seller was a yellow dress. They showed me the Barbie, and I said, "Shall I replicate this in the movie?" And they said they didn't think it would be very recognisable, even though it was the most popular Barbie dress. But that's what set me to the yellow, and I just continued with that idea, even though I changed the dress completely.