In 2016, singer Halsey pulled off Millie Bobby Brown's character, "Eleven," for Halloween.

Halsey pulled it off so well due to the resemblance between them and Brown.

Their resemblance has been brought up repeatedly and most recently, at Halsey's appearance on "The Tonight Show With Jimmy Fallon."

While on the show, Halsey revealed they wanted Brown to play them in a biopic.

Although Halsey suggested Brown, they weren't sure if the actress would agree to cast them.

However, Brown once said she was ”sooo down" to play the singer in a biopic.

Halsey also confirmed they met their partner, Alev Aydin, while working on a biopic based on their life.

Halsey appeared at the Governors Ball Festival in New York City, performing a rendition of Kate Bush's "Running Up That Hill."

The singer also suffered a mishap after the venue for their Maryland concert became flooded.