Mumtaj’s actual name is Nagma Khan. She first adopted her screen name to be Monisha but later changed that to Mumtaj. She did her schooling from the famous St. Marys Convent School in Kasauli. She though hails from a family which speaks in Urdu but she is well versed in various other languages such as Hindi, English, Punjabi and Tamil.
She made her acting debut with the Tamil film Monisha En Monalisa in the year 1999. The very same year she appeared in four other films which include Malayalam film Jananayakan and as an item girl in Telugu film Chala Bagundi. Soon she became an established actress of Tamil cinema and her hot looks and bold scenes in the movies helped her garner massive fan following. Her films such as Sonnal Thaan Kathala, Malabar Police, Maha Nadigan and Ezhumalai among various others were well received at the box-office.
She did item numbers in numerous films and was widely appreciated for her item numbers. She worked in all the South Indian language films. In addition to regional films, she has also acted in a couple of Bollywood films as well. She made her Bollywood debut with the film titled Boond in 2000 after which she appeared in Sunil Shetty and Mahima Chaudhary starrer film Yeh Teraa Ghar Yeh Meraa Ghar in 2007.
In addition to the silver screen, she has also served as a judge on dance based reality shows such as Boys Vs Girls and Maanada Mayilada.