Milly Alcock is one of the fastest rising young actresses in Hollywood right now. She became famous after playing young Rhaenyra Targaryen in the hit HBO series House of the Dragon. Now she is stepping into an even bigger role as the new Supergirl in DC’s upcoming superhero movie.
When Was Milly Alcock Born?
Milly Alcock’s full name is Amelia May Alcock. She was born on April 11, 2000, which makes her 26 years old in 2026. She grew up in Australia and started acting at a young age before becoming known around the world.
Where Is She From?
Milly was born and raised in Sydney, Australia. Before becoming famous, she appeared in several Australian television shows and commercials. Her early work helped her build experience and eventually opened the door to bigger international projects.
How Did She Become Supergirl?
Many fans first noticed Milly in House of the Dragon. Her performance as young Rhaenyra received praise from both viewers and critics. After that success, DC Studios began looking for a new actress to play Kara Zor El, also known as Supergirl.
According to reports, Milly impressed DC executives during the audition process. Her screen test was so strong that it reportedly left some people emotional. Director James Gunn and the DC team believed she had the right mix of strength, vulnerability, and attitude to bring a fresh version of Supergirl to the screen.
This new version of Supergirl is not the cheerful hero many people remember from older movies and TV shows. Instead, she is portrayed as tougher, more independent, and shaped by difficult experiences. Milly has said that she likes how flawed and human this version of the character feels.
Who Is Milly Alcock’s Boyfriend?
Milly is currently in a relationship with Joseph “Jo” Powell. The couple kept their relationship mostly private at first, but they later appeared together publicly and shared photos on social media. They made one of their biggest public appearances together at the 2026 BAFTA Awards.
What Does Jo Powell Do?
Jo Powell is a chef and food creative based in London. He is also connected to food and hospitality projects and has built a following through his culinary work. While Milly spends her time on movie sets and red carpets, Powell works in the food industry and generally stays away from the Hollywood spotlight.
What Does Milly Post on Social Media?
Milly’s Instagram gives fans a look into both her personal life and her career. She often shares behind the scenes photos, travel pictures, professional photo shoots, and updates about her projects.
In recent months, many of her posts have focused on promoting Supergirl. She has shared premiere photos, trailers, ticket announcements, interviews, and promotional content connected to the movie. Her account has become one of the main places where fans can follow the film’s marketing campaign. (Instagram)
Even though she is becoming a major movie star, her social media still feels more casual and personal than many celebrity accounts.
What Can Fans Expect From Supergirl?
The upcoming Supergirl movie is one of DC’s most important projects. The film is based on the comic story Supergirl: Woman of Tomorrow and follows Kara Zor El on a dangerous journey across the galaxy. Unlike Superman, who grew up on Earth, Kara remembers the destruction of Krypton, which gives her a very different outlook on life.
Early reactions suggest that Milly Alcock brings a fresh energy to the character. Many people believe her version of Supergirl feels tougher, more emotional, and more unpredictable than previous versions. With DC trying to build a new cinematic universe, the success of this movie could make Milly one of the biggest stars in superhero films for years to come.
Conclusion
Milly Alcock’s journey from Australian television to Hollywood superhero movies has happened surprisingly fast. Born in Sydney in 2000, she first won audiences over in House of the Dragon and has now landed one of the biggest roles in comics. Alongside her growing career, she shares parts of her life with boyfriend Jo Powell while continuing to connect with fans through social media.
With Supergirl arriving in theaters this week, all eyes are on Milly Alcock as she takes on the challenge of becoming DC’s newest leading hero.
