The entertainment industry has long maintained a paradoxical relationship with mature women. While revered as cultural icons of wisdom and sophistication in select contexts, female performers over the age of 40 have historically faced systemic marginalization, diminished leading roles, and erasure from mainstream narratives. This paper examines the historical trajectory of mature women in cinema and entertainment, analyzing the socio-industrial mechanisms of ageism, the specific archetypes available to older actresses, and the contemporary shift driven by mature creators and streaming platforms. Drawing on industry data, case studies (Meryl Streep, Viola Davis, Jane Fonda), and feminist film theory, this paper argues that while the "silver ceiling" persists, a significant paradigm shift—fueled by demographic changes, legacy stars producing their own content, and the demand for authentic representation—is gradually reshaping the landscape for mature women in global entertainment.