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Milly Alcock

Milly Alcock

Actor · Born April 11, 2000 · Sydney, New South Wales, Australia

IMDb

Biography

Amelia May Alcock (born 11 April 2000) is an Australian actress. She received an AACTA Award nomination for her performance in the Foxtel comedy-drama Upright (2019–2022). She gained wider recognition for starring as young Rhaenyra Targaryen in the HBO fantasy series House of the Dragon (2022–2024). Alcock is best known for portraying Kara Zor-El / Supergirl in the DC Universe, first making an uncredited appearance in Superman (2025). She reprised the role starring in Supergirl (2026).

Acted in 19

2010s

  1. 2019

    Upright

    Meg Adams · 16 episodes

    83

  2. Reckoning

    Sam Serrato · 10 episodes

  3. Les Norton

    Sian Galese · 4 episodes

  4. 2018

    Fighting Season

    Maya Nordenfelt · 6 episodes

  5. Pine Gap

    Marissa Campbell · 5 episodes

    71

  6. The School

    Jien

  7. 2017

    High Life

    Isabella Barrett · 6 episodes

  8. 2014

    Janet King

    Cindi Jackson · 3 episodes

    75
  9. 2013

    Wonderland

    Teen Girl 1 · 1 episode

  10. A Place to Call Home

    Emma Carvolth · 4 episodes

    80

Produced 1

2020s

  1. 2025

    Based Amy

    Executive Producer

Appearances4

2020s

  1. 2024

    DC Studios Showcase: The Official Podcast

    Self · 1 episode

  2. House of the Dragon: The House That Dragons Built

    Self · 8 episodes

  3. 2021

    Last Meals

    Self · 1 episode