22-year-old Alcock plays Princess Rhaenyra Targaryen in the series set 200 years before the events of Game of Thrones.
House of the Dragon star Milly Alcock has opened up about the ways the blockbuster HBO series has changed her life as the first episode finally debuted on Monday (22 August).
Alcock said she was cooking dinner at a friend’s house when her agent told her she’d been cast in the fantasy series.
Alcock is joined in the cast by 19-year-old British actor Emily Carey, who plays a young Alicent Hightower.