The late Albert Maysles was one of America's great documentarians, a force in the field for nearly six decades, but even with all that excellent work behind him, his latest film, "Iris," has got to be one of his most charming. With her trademark huge round glasses and her genius for costume jewelry, the 93-year-old Iris Apfel could qualify as the world's oldest fashionista. But when she talks, you want to listen. That's because she not only has a lively sense of humor and a great spirit, but also is a remarkably sane and sensible individual who effortlessly holds your attention. Apfel is a complete individual, having her moment and relishing it. Playing Laemmle's Royal, West Los Angeles, and Playhouse 7, Pasadena; starting Friday, also at Laemmle's Town Center 5, Encino, and Claremont 5.