Lalitha majorly performs in the Tamil and Malayalam language movies. She got her first chance to perform in the movie adaptation of Koottukudumbam which was in turn directed by Sethumadhavan. Later in the year 1978, she got married and decided to take a gap from the acting profession. However, she came back with a bang through the movie directed by her husband titled as Kattathe Kilikkoodu in the year 1983. Consequently, she got many good roles to increase her familiarity through the movies such as Snamanassullavarkku Samadhanam, Aniyathi Pravu, Ponn Muttyidunna Tharavu, Sphadikam, Godfather, Vietnam Colony, Manichitrathazhu, Amaram, Pavithram, and much more. Most prominently, she received the National Filmfare award in the category of Best supporting Actress for the movie titled as Amaram which was filmed by her husband in the year 1991.
As a whole, in her acting career, she has performed in over 500 Malayalam movies. Additionally, her role as the mother of Shalini in the Tamil movie – Kadhalukku Mariyadhai made her extremely recognizable. In the year 2017, she has performed in two movies namely Fukri and Kaatru Veliyidai which are yet to be released. Her other upcoming movies include Devayaanam which is directed by Sukesh Roy and the other movie – Sakhavu. Additionally, she has performed in the television shows such as Sangeetha Sangamam, On Record, JB Junction, and much more.