Dune: Part Two co-writer Jon Spaihts has revealed why the movie makes a big change to Anya Taylor-Joy's character Alia Atreides, compared to Frank Herbert's novel.
Alia is Paul's sister and, in the source material, is present in the story as a toddler who can talk fluently – she's seen like this in David Lynch's Dune movie. But, in Denis Villeneuve's Dune 2, Alia is a fetus who speaks to her mother Jessica. In one of Paul's visions, she appears as an adult, played by Taylor-Joy.
