Milly Alcock , the breakout star of House of the Dragon , has revealed the unconventional way she discovered she had landed the coveted role of Supergirl , following a vision from DC Studios co-CEO James Gunn . The 26-year-old Australian actor, who captivated audiences as the young Princess Rhaenyra Targaryen , was chosen for her "punk rock" energy, a quality Gunn specifically sought for the iconic superhero. DC Studios co-CEO Peter Safran recounted Gunn’s initial vision for the character, inspired directly by Alcock’s performance. "He goes, ‘you know the young girl from House of the Dragon ? The young queen or princess? That’s how I picture it, like a young punk rock girl who is just totally badass and tough,’" Safran told The Associated Press . "I was like, yeah, that sounds fantastic, and we haven’t seen that before." Alcock, who had been working in her native Australia since her teenage years, found her world rapidly expanding.…