Milly Alcock, the Australian actress who captured global attention as the young Rhaenyra Targaryen in HBO’s House of the Dragon, is now poised to lead DC Studios’ Supergirl: Woman of Tomorrow. At 25, she has already earned major award nominations and built a filmography that spans Australian television and international blockbusters. Here is a detailed look at her biography, career, personal life, and what comes next.
Born Amelia May Alcock in Sydney, she began acting as a teenager and steadily worked her way through Australian TV before her breakout role made her a household name. Her casting as Kara Zor-El in the DC Universe marks one of the most significant superhero debuts of the mid-2020s, while her personal life has drawn quiet but consistent curiosity from fans.
The following sections cover everything from her age and height to her filmography, relationship status, and the rumors that occasionally surface online. All information is drawn from verified public records, official announcements, and reputable media sources.
How Old Is Milly Alcock and What Are Her Basic Bio Facts?
25
born Apr 11, 2000
5′5″
1.65 m
House of the Dragon
Upright, Supergirl (2026)
Australian
born in Sydney
Key Insights at a Glance
- Milly Alcock rose to global fame at 22 with her portrayal of young Rhaenyra Targaryen in HBO’s House of the Dragon.
- She is set to headline DC Studios’ Supergirl: Woman of Tomorrow, scheduled for release on June 26, 2026.
- Despite public curiosity, Alcock keeps her personal life private; she is in a relationship with Jo Powell, founder of the London-based food project Schoolnights.
- Her teeth have become a minor viral topic due to apparent cosmetic changes, but no official statement exists from the actress or her representatives.
- She earned an AACTA Award nomination for her lead role in the Foxtel comedy-drama Upright.
- Alcock made her television debut as a teenager in a 2014 episode of Janet King.
Snapshot Fact Table
| Attribute | Information |
|---|---|
| Full Name | Amelia May Alcock |
| Date of Birth | April 11, 2000 |
| Place of Birth | Sydney, New South Wales, Australia |
| Height | Approx. 5 ft 5 in (1.65 m) |
| Profession | Actress |
| Years Active | 2014–present |
| Notable Award | AACTA Award nomination (Upright) |
| Instagram Followers | ~2.3 million (as of 2025) |
What Are Milly Alcock’s Most Famous Movies and TV Shows?
Alcock’s filmography spans Australian television productions and major international franchises. Her most recognizable role remains young Rhaenyra Targaryen in the first season of House of the Dragon, the HBO prequel to Game of Thrones that premiered in 2022. For that performance, she received a nomination for the Critics’ Choice Television Award for Best Supporting Actress in a Drama Series.
Alcock’s performance in Upright earned her an AACTA Award nomination for Best Actress in a Comedy. The Foxtel series, which ran from 2019 to 2022, follows a young woman traveling across Australia with a musician, and critics praised Alcock’s emotional range and comedic timing.
House of the Dragon and the Leap to Global Fame
Casting Alcock as the younger version of Rhaenyra Targaryen was a pivotal decision for showrunners Ryan Condal and Miguel Sapochnik. The role required her to carry much of the season’s dramatic weight, and her performance was widely cited as a breakout moment. Despite the character being recast with an older actor in later episodes, Alcock’s portrayal left a lasting impression on audiences and critics alike.
Upright: The Role That Started Her Award Season
Before dragons and superheroes, Alcock starred alongside Tim Minchin in Upright, a Foxtel comedy-drama about a pianist and a runaway teenager traveling through the Australian outback. The series earned her an AACTA Award nomination and introduced her to a broader Australian audience. Alcock played the character Meg, a role that demanded both physical comedy and emotional vulnerability.
Supergirl: Woman of Tomorrow – Her Biggest Film to Date
In 2024, DC Studios confirmed that Alcock had been cast as Kara Zor-El, also known as Supergirl, in the upcoming film Supergirl: Woman of Tomorrow. She made an uncredited cameo appearance as the character in the 2025 Superman film before taking the lead role in her own feature, which is set for release on June 26, 2026. The film is part of James Gunn and Peter Safran’s new DC Universe.
Alcock has appeared in a range of Australian TV series, including A Place to Call Home (2013), Janet King (2014), Pine Gap (2018), Fighting Season (2018), Les Norton (2019), and The Gloaming (2020). In 2025, she starred as Simone DeWitt in the Netflix limited series Sirens alongside Julianne Moore and Meghann Fahy.
Who Is Milly Alcock’s Husband or Partner?
Milly Alcock is not married. She is in a relationship with Jo Powell, the founder of Schoolnights, a London-based food project and chef-led dining experience. The couple made their relationship Instagram official in the summer of 2025 and made their red carpet debut together at the 2026 BAFTA Awards.
Alcock has generally kept her personal life out of the spotlight, and fans have only recently learned about her relationship through public appearances and social media posts. No previous relationships have been publicly confirmed.
What Is Known About Jo Powell?
Jo Powell is a chef and the founder of Schoolnights, a London-based food venture. The couple appears to split time between the United Kingdom and Australia, depending on Alcock’s filming schedule. Powell’s professional background is in the culinary industry, and the two have been seen attending industry events together since mid-2025.
When Is Milly Alcock’s Supergirl Movie Releasing?
Supergirl: Woman of Tomorrow is scheduled for release on June 26, 2026. Alcock takes on the lead role of Kara Zor-El, making her the first actress to portray the character in a solo theatrical film within the new DC Universe continuity.
The film was announced alongside a broader slate of DC projects by studio co-heads James Gunn and Peter Safran. Alcock’s casting was widely reported by industry outlets such as Variety, and she made an uncredited cameo as the character in the 2025 Superman film prior to her standalone feature.
As of mid-2026, HBO has not officially confirmed whether Alcock will reprise her role as young Rhaenyra Targaryen in future flashbacks or prequel content. While fans have speculated about possible returns, no formal announcement has been made by the network or the show’s producers.
How Did Milly Alcock Build Her Career? A Timeline
- 2000 – Born in Sydney, New South Wales, Australia.
- 2014 – Television debut in an episode of Janet King.
- 2018 – Recurring role in Pine Gap and appearance in Fighting Season.
- 2019 – Lead role in Upright, earning an AACTA Award nomination.
- 2020 – Cast as young Rhaenyra Targaryen in HBO’s House of the Dragon; also appears in The Gloaming.
- 2022 – House of the Dragon premieres to critical acclaim; Alcock receives a Critics’ Choice Television Award nomination.
- 2024 – Cast as Kara Zor-El / Supergirl in the DC Universe film Supergirl: Woman of Tomorrow.
- 2025 – Makes uncredited cameo as Supergirl in Superman; stars in Netflix limited series Sirens.
- 2026 – Supergirl: Woman of Tomorrow releases June 26; makes red carpet debut with partner Jo Powell at the BAFTAs.
What Is Confirmed and What Is Still Unclear About Milly Alcock?
| Established Information | Information That Remains Unclear |
|---|---|
| Date of birth and height via official records and verified Wikipedia and IMDb entries. | Marital status – not married, but relationship with Jo Powell confirmed as of 2025. |
| Roles in House of the Dragon, Upright, and Supergirl confirmed by HBO, AACTA, and DC Studios. | Teeth changes – no official statement from Alcock or her representatives; speculation based on photo comparisons. |
| AACTA Award nomination for Upright and Critics’ Choice Television Award nomination for House of the Dragon. | Exact net worth – not publicly disclosed; estimates vary between $1 million and $3 million. |
| Full name is Amelia May Alcock, as listed on Wikipedia. | Ethnicity details – Australian by birth, but no deeper ancestry or family background has been publicly confirmed. |
Context and Analysis: Why Milly Alcock Matters in Hollywood
Milly Alcock represents a new generation of Australian actors making the leap to Hollywood. Her casting as Supergirl signals DC Studios’ strategy of building around younger incarnations of iconic characters, and her rapid rise from a Foxtel comedy-drama to a major superhero franchise is uncommon even in an industry accustomed to overnight success stories.
Critics have consistently praised her emotional depth, particularly in House of the Dragon, where she held the screen alongside seasoned actors. The online curiosity about her teeth and relationships reflects typical fan behavior toward rising stars, but Alcock has maintained a low-key public presence. She has described herself as the “antithesis of a celebrity,” noting that she approaches acting as a way to “disappear” rather than to be idolized.
Her trajectory also highlights the growing international reach of Australian television training. Before her Hollywood breakthrough, Alcock built her craft across multiple Australian productions, a path similar to other successful exports like Margot Robbie and Elizabeth Debicki.
Where Do the Facts About Milly Alcock Come From?
The biographical details in this article are drawn from verified public records and reputable industry sources. Wikipedia and IMDb provide the foundational data on her birth date, place of birth, and filmography. The announcement of her casting as Supergirl was covered by Variety, and her AACTA Award nomination is listed on the official AACTA website. Information about her relationship with Jo Powell comes from an Elle profile published in 2025.
“Amelia May Alcock (born 11 April 2000) is an Australian actress.”
– Wikipedia, Milly Alcock
“Milly Alcock has been cast as Supergirl in James Gunn and Peter Safran’s new DC Universe.”
– DC Studios press release, via Variety
“Nominee for Best Actress in a Comedy for Upright (2020).”
– AACTA Awards
What’s Next for Milly Alcock?
The immediate future centers on the release of Supergirl: Woman of Tomorrow in June 2026. Beyond that, no additional film or television projects have been formally announced. A potential return to House of the Dragon in flashback sequences remains unconfirmed, and no indie film projects have been made public. Alcock’s social media presence continues to grow, but she has given no indication that she plans to shift toward a more public personal brand. For those interested in the careers of similar young actors in fantasy and superhero genres, profiles of Emma Appleton – Biography, Age, Height, and Career and Jack Quaid – Biography, Parents, Height, and Iconic Roles offer useful comparisons.
Frequently Asked Questions About Milly Alcock
What is Milly Alcock’s real name?
Her full name is Amelia May Alcock. She is known professionally as Milly Alcock.
How tall is Milly Alcock?
Approximately 5 feet 5 inches (1.65 m), according to her IMDb profile.
What nationality is Milly Alcock?
Australian. She was born in Sydney, New South Wales.
Is Milly Alcock married?
No. She is in a relationship with chef Jo Powell, founder of Schoolnights in London.
Why are people interested in Milly Alcock’s teeth?
Speculation about cosmetic dental changes emerged from photo comparisons online. No official statement has been made by Alcock or her representatives.
What is Milly Alcock’s net worth?
Not publicly disclosed. Unofficial estimates range between $1 million and $3 million based on her known roles.
What role did Milly Alcock play in Upright?
She played Meg, a runaway teenager traveling across Australia alongside a pianist. The role earned her an AACTA Award nomination.
What is Milly Alcock’s ethnicity?
She is Australian by birth. No deeper ancestry or ethnic background has been publicly confirmed.
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Thomas Whitmore covers politics, public policy and government affairs for BritView.uk.