'Knots Landing' star Donna Mills says she won't 'be quiet' after critic targeted her makeup at age 85

"Knot's Landing" star Donna Mills is doubling down after she went viral for her defiant response to a critic who took aim at her appearance.

Last month, the 85-year-old actress ignited a social media firestorm when she shared a video addressing an Instagram user's comment that she wears "too much makeup for your age."

In the clip, Mills first appeared in her usual full-glam style before briefly transforming into stereotypical elderly woman with gray hair, pearls and wire-rimmed glasses.