WESTWOOD, LOS ANGELES, CA, USA - OCTOBER 26: Actress Millie Bobby Brown wearing a Calvin Klein dress arrives at the Los Angeles Premiere Of Netflix's 'Stranger Things' Season 2 held at the

Millie Bobby Brown arrives at the season three premiere of Stranger Things at Santa Monica High School on Friday, June 28, 2019, in Santa Monica, Calif. (Photo by Jordan Strauss/Invision/AP Stock Photo

WESTWOOD, LOS ANGELES, CA, USA - OCTOBER 26: Actress Millie Bobby Brown wearing a Calvin Klein dress arrives at the Los Angeles Premiere Of Netflix's 'Stranger Things' Season 2 held at the

Millie Bobby Brown at Netflix's Stranger Things Season 3 premiere held at Santa Monica High School on June 28, 2019 in Santa Monica, CA Stock Photo - Alamy

WESTWOOD, LOS ANGELES, CA, USA - OCTOBER 26: Actress Millie Bobby Brown wearing a Calvin Klein dress arrives at the Los Angeles Premiere Of Netflix's 'Stranger Things' Season 2 held at the

Finn Wolfhard editorial image. Image of actress, dreams - 102684095

WESTWOOD, LOS ANGELES, CA, USA - OCTOBER 26: Actress Millie Bobby Brown wearing a Calvin Klein dress arrives at the Los Angeles Premiere Of Netflix's 'Stranger Things' Season 2 held at the

WESTWOOD, LOS ANGELES, CA, USA - OCTOBER 26: Actress Millie Bobby Brown wearing a Calvin Klein dress arrives at the Los Angeles Premiere Of Netflix's 'Stranger Things' Season 2 held at the

WESTWOOD, LOS ANGELES, CA, USA - OCTOBER 26: Actress Millie Bobby Brown wearing a Calvin Klein dress arrives at the Los Angeles Premiere Of Netflix's 'Stranger Things' Season 2 held at the

Millie Bobby Brown At 'Stranger Things 3' Premiere: Wears Ballerina Dress – Hollywood Life

WESTWOOD, LOS ANGELES, CA, USA - OCTOBER 26: Actress Millie Bobby Brown wearing a Calvin Klein dress arrives at the Los Angeles Premiere Of Netflix's 'Stranger Things' Season 2 held at the

443 Millie Bobby Brown Images, Stock Photos, 3D objects, & Vectors

WESTWOOD, LOS ANGELES, CA, USA - OCTOBER 26: Actress Millie Bobby Brown wearing a Calvin Klein dress arrives at the Los Angeles Premiere Of Netflix's 'Stranger Things' Season 2 held at the

What the 'Stranger Things' Cast Has Worn at the Show's Premieres

WESTWOOD, LOS ANGELES, CA, USA - OCTOBER 26: Actress Millie Bobby Brown wearing a Calvin Klein dress arrives at the Los Angeles Premiere Of Netflix's 'Stranger Things' Season 2 held at the

13,779 Millie Images, Stock Photos, 3D objects, & Vectors

WESTWOOD, LOS ANGELES, CA, USA - OCTOBER 26: Actress Millie Bobby Brown wearing a Calvin Klein dress arrives at the Los Angeles Premiere Of Netflix's 'Stranger Things' Season 2 held at the

WESTWOOD, LOS ANGELES, CA, USA - OCTOBER 26: Actress Millie Bobby Brown wearing a Calvin Klein dress arrives at the Los Angeles Premiere Of Netflix's 'Stranger Things' Season 2 held at the