Sandhya was studying when she starred in the
Tamil love story
Kaadhal. The role was offered to many known actresses, including
Ileana D'Cruz and then
Varalaxmi Sarathkumar, but the latter's father was reluctant to let her become an actress at the time. The team next picked
Saranya Nag who was in Class IX, when cinematographer Vijay Milton suggested her name to Balaji Sakthivel. She was initially considered to play the heroine in the film, but finally the role was later handed to Sandhya, after the director felt Saranya looked too young. After the success of the film
Kaadhal, in 2004, she took up a Malayalam film titled
Alice in Wonderland which she played as the sister of actor
Jayaram. Then came the musical romance
Dishyum with
Jeeva. She also acted in
Koodal Nagar with
Bharath. After the success of
Cycle, she shifted her focus to Malayalam cinema. She debuted as a playback singer for the film
Manjal Veiyil. In 2010, she appeared in a role opposite
Vishnuvardhan in the
Kannada film
Aptharakshaka directed by
P. Vasu. Some of them include,
Soodhattam (2013),
Puzhayum Kannadiyum (2014) and
Veri:Thimiru 2 (2015) and in Tamil. She has been a judge on a number of
reality shows including Comedy Stars and Little Stars on
Asianet. She make her small screen debut with TV show
Kanmani (2020). ==Personal life==