How Old Is Millie Bobby Brown Today 2025 Age. Millie bobby brown, 20, is firing back at cruel comments on her aged appearance. Millie bobby brown, born february 19, 2004, is an english actress and professional model.

“millie what happened,” one person wrote on the post, while another commented, “millie’s google history : ‘how to look 65 when you are 16,’” insinuating that.