Tamanna started her career as a model and appeared in many commercials. Her debut in a Hindi Movie Chand Sa Roshan Chehra in the year 2005 at the age of thirteen years. Later that her debut in Tamil Movie Kedi in the year 2006 was a successful in the box office. Her debut in Telugu move in Happy Days was a great success at box office and after that she signed many more assignments in Telugu and Tamil. She was nominated for the Filmfare Best Tamil Actress Award for the move Kalloori a Tamil Movie.