Brown has starred in the monster film Godzilla King of the Monsters2019 and its sequel Godzilla vs. Kong 2021.
In 2018 Brown was featured in the Time 100 list of the worlds most influential people and was appointed asa UNICEF 
Goodwill Ambassador the then youngest person selected for this position.

Brown was born in Marbella Málaga Spain on 19 February 2004 the third of four children born to British parents Kelly
and Robert Brown. Her father is an estate agent.

She was born with partial hearing loss in her left ear and gradually lost all hearing in that ear over several years. 
She moved wIn 2013 Brown made her acting debut as a guest star in the ABC fantasy drama series Once Upon a Time in 
Wonderland a spin off of Once Upon a Time portraying the role of Young Alice. In 2014 she had a starring role in the
BBC America paranormal drama-thriller series Intruders as Madison Donnell.