First known for her leading role on the series Intruders, she would later land a starring role as Eleven on the hit Netflix series Stranger Things. She was also cast in the 2019 blockbuster film Godzilla: King of the Monsters.
She was featured in a couple of episodes of Once Upon a Time in Wonderland as Young Alice.
She was born in Marbella, Spain, but her family moved to Bournemouth before she was five. She moved to Orlando, Florida in 2011. She has a brother named Charlie and sisters named Paige and Ava. She was in a relationship with Jacob Sartorius from late 2017 to mid-2018. In 2019, she began dating Romeo Beckham.
She stars opposite Winona Ryder on Stranger Things.