Zendaya was born on September 1, 1996, so she was 21 years old during the release and promotion of The Greatest Showman in 2017. Key points:

• The Greatest Showman released in December 2017 in the United States. Zendaya’s role as Anne Wheeler was one of her notable film performances from that year.

• Her birth date places her at 21 at the time of the film’s release, which aligns with media coverage noting her age during the film’s rollout.

If you’d like, I can confirm exact age on a specific premiere date or provide a quick timeline of Zendaya’s age across each year of major projects.