The success of films like "Book Club" (2018), "The Best Exotic Marigold Hotel" (2011), and "Mamma Mia!" (2008) has proven that movies featuring mature women can be commercially successful and critically acclaimed. These films showcase the talents of women like Jane Fonda, Lily Tomlin, and Judi Dench, who are redefining what it means to be a leading lady in Hollywood.