Milly Alcock

Amelia 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), for which she was nominated for a Critics' Choice Television Award for Best Supporting Actress in a Drama Series.

Alcock portrays Kara Zor-El / Supergirl in the DC Universe, first appearing in Superman (2025) before starring in Supergirl (2026).

Early life Alcock was born on 11 April 2000 and raised in the Sydney suburb of Petersham. She has two younger brothers. Alcock was introduced to acting upon playing Little Red Riding Hood in Taverners Hill Infants School's version of Little Red Rocking Hood. She attended the local Stanmore Public School and then Newtown High School of the Performing Arts, from where she dropped out in 2018 when she was cast in Upright.