Charli xcx and Olivia Wilde will co-star in ‘I Want Your Sex’. The ‘brat’ singer and the ‘Don’t Worry Darling’ director have been cast in the upcoming movie from filmmaker Gregg Araki, according to the Hollywood Reporter. ‘Licorice Pizza’s Cooper Hoffman will also star in the film, which was co-written by Araki and Karley Sciortino. THR reports that the synopsis for the film reads: “When fresh-faced Elliot (Hoffman) lands an exciting job for renowned artist, icon and provocateur Erika Tracy (Wilde), his fantasies come true as Erika taps him to become her sexual muse. But Elliot soon finds hims…