Milly Alcock is an Australian actress notable for her performances in television. She earned an AACTA Award nomination for her role in the comedy-drama *Upright* (2019-2022). Alcock achieved wider recognition for portraying the young Rhaenyra Targaryen in HBO's fantasy series *House of the Dragon* (2022-2024), a role that garnered her a Critics' Choice Television Award nomination for Best Supporting Actress in a Drama Series.
Amelia May "Milly" Alcock was born on April 11, 2000, in Australia.
In 2014, Milly Alcock made her television debut as a teenager in an episode of Wonderland.
From 2015 to 2017, Milly Alcock appeared on Disney Channel in Australia, presenting on B.F. Chefs and Hanging With.
In 2017, Milly Alcock landed her first named roles as Isabella Barrett in High Life and Cindi Jackson in Janet King.
In 2018, Milly Alcock appeared in her first feature film, The School.
In 2018, Milly Alcock dropped out of Newtown High School of the Performing Arts when she was cast in Upright.
Milly Alcock was presented with a Casting Guild of Australia Rising Star Award in 2018.
In 2019, Alcock began starring in the Foxtel comedy-drama series Upright as runaway teenager Meg.
In July 2021, Milly Alcock was cast as young Princess Rhaenyra Targaryen in House of the Dragon.
In 2022, Milly Alcock gained wider recognition for starring as young Rhaenyra Targaryen in the HBO fantasy series House of the Dragon.
In 2022, Milly Alcock returned for Upright's second series.
In 2022, the HBO fantasy series House of the Dragon was released, starring Milly Alcock as young Princess Rhaenyra Targaryen.
In January 2023, Milly Alcock appeared in the music video for "Easy Now" by Noel Gallagher's High Flying Birds. She made her West End stage debut in The Crucible in June.
In January 2024, it was announced that Milly Alcock had been cast to play Kara Zor-El / Supergirl in the DC Universe film Supergirl (2026).
Milly Alcock starred as young Rhaenyra Targaryen in the HBO fantasy series House of the Dragon (2022–2024).
In 2025, Alcock first appeared as Kara Zor-El / Supergirl in the DC Universe film Superman.
In 2025, Milly Alcock will make a cameo appearance as Kara Zor-El / Supergirl in Superman and starred in the Netflix series Sirens.
In 2026, Alcock will reprise the role of Kara Zor-El / Supergirl starring in Supergirl.
Milly Alcock will play Kara Zor-El / Supergirl in the DC Universe film Supergirl released in 2026.
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