DC has found its Supergirl! 'House of the Dragon' star Milly Alcock has landed the titular role for DC Studios and will headline her own feature film Warner Bros.' 'Supergirl: Woman of Tomorrow.' Alcock screen-tested for DC Studios bosses James Gunn and Peter Safran last week, along with Meg Donnelly, who was also up for the role. The character is expected to appear in a DC Studios project before her solo movie, but it's unclear if that project will in fact be Gunn's 'Superman: Legacy' or another DC project.