Geetha made her film debut with the 1978 Tamil film Bairavi as the title character in which she played Rajinikanth's sister. She was in her seventh grade when she was cast for the film.[3] She later discontinued her studies to concentrate on her movie career.[4] Her performance as Indira in the 1986 Malayalam film Panchagni[5] based on the true life story of a Naxalite revolutionary Ajitha was well acclaimed and described by The Hindu as "one of Malayalam cinema's landmark heroines".[3] The same year she had more Malayalam releases such as Sukhamo Devi, Kshamichu Ennoru Vakku, Aavanazhi, Geetham, etc. made her a popular actress in Malayalam cinema [3] She won the State award for the second best actress in 1989 for Oru Vadakkan Veeragatha.,[3] most of her notable performances were with Mammootty and Mohanlal.
Geetha also acted in Tamil Serials like Kai Alavu Manasu and Engirindho Vanthaal, both directed by K. Balachander. She also starred in the Tamil Serials such as Katha Kathayaam Karanamaam and recently in Rajakumari, where she played Ramya Krishnan's mother which aired on Sun TV.
In 1997 she married Vasan Thatham, an American CPA and Indian Chartered accountant. The couple lived in New Jersey, where Vasan is a business promoter and advisor to corporations. The couple have one son who was born in 1999 [6]