Milly Alcock

Milly Alcock is an Australian actor raised in Sydney’s inner west. Her early television credits include Reckoning and Upright. She played the young Rhaenyra Targaryen in the first season of HBO’s House of the Dragon and appeared in the Netflix series Sirens. Her West End debut came in 2023, when she played Abigail Williams in Lyndsey Turner’s production of The Crucible at the Gielgud Theatre, following its National Theatre run. She moved to London in 2022. She plays Kara Zor-El in the DC Universe, first in Superman (2025) and then in the title role of Supergirl (2026), released in June.