"Stranger Things" Stars In and Out of Costume

Dacre Montgomery in Stranger Things (2016)

Caleb McLaughlin in Stranger Things (2016)

Matthew Modine and Hugh B. Holub in Stranger Things (2016)

Winona Ryder and Sean Astin in Stranger Things (2016)

Sean Astin at an event for The Strain (2014)

Caleb McLaughlin and Gaten Matarazzo in Stranger Things (2016)

Gaten Matarazzo at an event for The 74th Annual Golden Globe Awards 2017 (2017)

Natalia Dyer and Joe Keery in Stranger Things (2016)

Natalia Dyer at an event for Stranger Things (2016)

Noah Schnapp at an event for Stranger Things (2016)

Millie Bobby Brown and Linnea Berthelsen in Stranger Things (2016)

Linnea Berthelsen at an event for Stranger Things (2016)

Paul Reiser and Joe Davison in Stranger Things (2016)

Pruitt Taylor Vince in Stranger Things (2016)

James Landry Hébert and Millie Bobby Brown in Stranger Things (2016)

James Hebert poses for portrait at Sundance 2016 