Sujatha (10 December 1952 6 April 2011) was a popular South Indian actress who has performed in Tamil, Malayalam, Telugu and Hindi language films, often with Kamal Haasan. Known for restraint and subtlety in portrayal of varied emotions, Sujatha was introduced to the Tamil film industry by Director K. Balachander as the protagonist in Aval Oru Thodarkathai. Sujatha spent her childhood in Sri Lanka, where she would actively participate in school plays, and later moved to Kerala when she was about 14. She acted in Ernakulam Junction, a Malayalam film, and soon drew the attention of Balachander. She died of a cardiac arrest on 6 April 2011 after undergoing treatment for a heart ailment. Source: Wikipedia
Who is most successful south Indian actress in bollywood?