Along with Roohi Bano and Uzma Gillani, she dominated the television screen during the 1970s and early 1980s. She was younger sister of notable television personality, Ayesha Khan. Riyasat earliest drama was the detective series.
Her career took off with Haseena Moin"s classic during the late 1970s.
In another popular venture, she acted alongside actor Moin Akhtar in the cheek-in-tongue long play, Half-Playt, by Anwar Maqsood. Some of her notable plays include, Panah,, Dhoop, Deewar, Khoya Hua Aadmi, Silver Jubilee,, Ab Tum Jasakte Ho and among many others
She died of cancer on 26 August 1996. Panah Dasht e Tanhai Ab Tum Ja Saktey Ho Half Plate - 1980s as Begum Sahiba (wife of Mirza) Wadi e Purkhar Meri Sadgi Dekh Dhoop Deewar Nange Paon Baazdeed Naqsh e Saani Qarz Adhay Chehray Typist Umeed e Bahar.