Millie Bobby Brown Mourns 'Godzilla vs. Kong' Costar Kayle Hottle's Sudden Death

Millie Bobby Brown is among the sea of fans who are gutted by Kaylee Hottle's sudden death ... and she's paying tribute to her late costar, who died in a car crash. Millie starred alongside Kaylee in "Godzilla vs. Kong" ... and after Kaylee's death…