Milly Alcock Movies and TV Shows: The Complete Guide From Upright to Supergirl

Milly Alcock Movies and TV Shows

Few actors have risen as fast as Milly Alcock. In 2021, she was washing dishes in a Sydney restaurant between acting jobs. A year later, she was the face of the biggest fantasy series on television. Now she wears the cape of one of the best-known superheroes in the world. A look through Milly Alcock movies and TV shows reveals a short list so far, but one with striking range: road-trip comedy, political drama, dark satire, and blockbuster action.

This guide covers every film and series, her key roles, her awards, her age and background, and what she has coming next.

Who Is Milly Alcock?

She first acted in a primary school play, as Little Red Riding Hood. She studied at a performing arts high school and left in 2018, before graduating, when she won a lead role in the series Upright. She has two younger brothers. One of them, Albert Alcock, plays professional rugby union.

Milly Alcock Age

People often search for Milly Alcock age details since she has played characters both younger and older than herself. She was born on April 11, 2000. That makes her 26 years old as of late 2026.

She was 21 when she filmed House of the Dragon, in which she played a princess in her mid-teens. She was 24 during most of the filming of Supergirl. When looking at Milly Alcock age milestones, the pace stands out: a first lead role at 18, worldwide fame at 22, and the lead in a superhero film at 26.

Complete Television List

Television is where most Milly Alcock movies and TV shows are found so far.

Complete Film List

The film side of Milly Alcock movies and TV shows is shorter, but it is growing fast.

Early Work in Australia (2014 to 2020)

Her career began with small parts on Australian television. She made her first screen appearance at 14 in an episode of the romantic drama Wonderland. As a teenager, she also presented children’s programs for the Disney Channel in Australia, including B.F. Chefs and Hanging With.

Dramatic roles followed.

• Janet King (2017). She had a recurring part as Cindi Jackson in the legal drama’s third season.
• A Place to Call Home (2018). She joined the popular period drama in its last season as Emma Carvolth.
• Fighting Season (2018). She played the daughter of a soldier in this drama about Australian troops home from Afghanistan.
• Pine Gap (2018). In this spy thriller, made with Netflix, she played Marissa Campbell, the daughter of an American official at a joint intelligence base.
• The School (2018). Her first film was a low-budget Australian horror story.
• Les Norton (2019). She appeared in the crime comedy set in 1980s Sydney.
• The Gloaming and Reckoning (2020). She had recurring parts in a Tasmanian mystery series and a crime thriller.

In 2018, the Casting Guild of Australia named her one of its Rising Stars.

Upright (2019 to 2022)

Her first major role came in Upright, a comedy drama created by and starring Tim Minchin. He plays Lucky, a washed-up musician who must drive an upright piano across the Australian desert to reach his dying mother. Alcock plays Meg, a tough, sharp-tongued teenage runaway who ends up in his car.

The two leads carry the show. Critics praised the newcomer for matching an experienced performer scene for scene, with a mix of bravado and hurt. She received a nomination for Best Comedy Performer at the AACTA Awards and, for the second season, a Logie Award nomination for Most Outstanding Actress.

Upright remains the best place to see her early talent.

House of the Dragon (2022 to 2024)

Her life changed with one audition tape. HBO cast her as the young Princess Rhaenyra Targaryen in House of the Dragon, the prequel to Game of Thrones. The story is set about 170 years before the earlier series and follows a war of succession within the Targaryen family.

Alcock played Rhaenyra as a teenager in the first five episodes of season one. Her version of the character is bold, clever, and frustrated by the limits placed on her as a girl who has been named heir to the throne. After a time jump, Emma D’Arcy took over the role as the adult Rhaenyra.

The premiere drew the largest audience for a series debut in HBO’s history at that time. Alcock became a star almost overnight. She earned a Critics’ Choice Television Award nomination for Best Supporting Actress in a Drama Series and a Saturn Award nomination. She returned for a brief guest appearance in season two, in a vision seen by another character.

Sirens (2025)

Her first major project after that success was a sharp change of tone. Sirens is a dark comedy limited series from Netflix, created by Molly Smith Metzler and based on her play.

The story covers one tense weekend at a lavish seaside estate. Meghann Fahy plays Devon, a working-class woman who arrives to confront her younger sister. Alcock plays that sister, Simone DeWitt, the devoted live-in assistant to a wealthy and magnetic socialite, played by Julianne Moore. Devon believes that her sister has been drawn into something like a cult. Kevin Bacon also stars.

The Milly Alcock Sirens performance drew strong notices. Simone is bright and brittle, a young woman who has remade herself to escape a painful childhood. The part let her show comic timing, an American accent, and a slow reveal of ambition under a sunny surface. Viewers who knew her only from fantasy drama saw a new side of her.

The series topped Netflix’s charts on release. For many fans, the Milly Alcock Sirens role confirmed that her success in House of the Dragon was no accident. If you are looking for where to begin, Milly Alcock Sirens episodes are a quick watch at five in total.

Supergirl and the DC Universe (2025 to 2027)

In early 2024, DC Studios chose her to play Kara Zor-El, the cousin of Superman, in its new film universe led by James Gunn and Peter Safran.

• Superman (2025). She made a short, uncredited appearance near the end of James Gunn’s film. Her Kara arrives at the Fortress of Solitude after a wild night on another planet, to collect her dog, Krypto.
• Supergirl (2026). Her first lead film role came in this space adventure, directed by Craig Gillespie and based on the comic series Supergirl: Woman of Tomorrow by Tom King and Bilquis Evely. In it, Kara is a harder, more cynical hero than her cousin. She saw her home destroyed, and she copes badly. She meets a young alien girl, Ruthye, who seeks revenge for her father’s murder, and the two cross the galaxy together. The cast includes Eve Ridley, Matthias Schoenaerts, David Krumholtz, Emily Beecham, and Jason Momoa as Lobo.

The film opened on June 26, 2026. Reviews were mixed, and its box office fell short of hopes. Critics widely agreed on one point: Alcock was excellent in the part. She won the Critics’ Choice Super Award for Best Actress in a Superhero Movie.

• Man of Tomorrow (2027). She is set to return as Kara in the next Superman film, which is in post-production.

Upcoming Projects

The list of Milly Alcock movies and TV shows will grow over the next two years.

Release dates can shift, so check current news for updates.

Her Best Roles, Ranked

Out of all Milly Alcock movies and TV shows, these roles stand out most.

Awards and Nominations

Acting Style

Several qualities appear across her work.

• Sharp edges. Her characters tend to be defiant and quick-witted.
• Hidden hurt. Under the toughness, she lets pain show in small moments.
• Comic timing. Upright and Sirens both rely on it.
• Stillness. She can hold the screen without speaking, which made her Rhaenyra so watchable.
• Accent work. She has played British-sounding royalty and Americans, in addition to roles in her native Australian accent.

Where to Watch

Most Milly Alcock movies and TV shows are easy to find on major streaming services.

Streaming rights change often, so check a search service for current listings in your country.

Where to Start

If you are new to Milly Alcock movies and TV shows, watch these four in this order.

1. House of the Dragon, season one, episodes one to five.
2. Sirens, a five-episode weekend watch.
3. Upright, for the role that started it all.
4. Supergirl, for her blockbuster lead.

Frequently Asked Questions

What is Milly Alcock best known for? Playing the young Rhaenyra Targaryen in House of the Dragon and Kara Zor-El in Supergirl.

How old is she? She was born on April 11, 2000.

Where is she from? Sydney, Australia.

Who does she play in Sirens? Simone DeWitt, the assistant to a wealthy socialite played by Julianne Moore.

Is she still in House of the Dragon? Her main run was in season one. She made a brief guest appearance in season two.

Was she in Superman? Yes, in a short cameo as Supergirl.

When did Supergirl come out? June 26, 2026.

What is her real name? Amelia May Alcock.

What is she doing next? Man of Tomorrow, the comedy Thumb, and a horror film from Takashi Miike.

Final Thoughts

The list of Milly Alcock movies and TV shows is still short, but few actors of her generation have made as strong a mark so fast. She built her skills in Australian television, broke through in Upright, became famous around the world in House of the Dragon, showed her range in Sirens, and stepped into a superhero lead with Supergirl.

She is in her mid-twenties, with a returning role in the DC Universe and several new projects on the way. For anyone who enjoys watching a career take shape, hers is one to follow.

Key Takeaways

• Milly Alcock movies and TV shows range from early Australian series such as Janet King and Pine Gap to House of the Dragon, Sirens, and Supergirl.
• She was born on April 11, 2000, in Sydney, Australia.
• Her breakout role was Meg in Upright, and her international breakthrough was the young Rhaenyra Targaryen in House of the Dragon.
• She played Simone DeWitt in the 2025 Netflix limited series Sirens, with Julianne Moore and Meghann Fahy.
• She plays Kara Zor-El in Superman, Supergirl, and the upcoming Man of Tomorrow.
• She won the Critics’ Choice Super Award for Best Actress in a Superhero Movie for Supergirl.
• Upcoming projects include Thumb and a horror film from Takashi Miike.