Namitha's rise to fame can be attributed to her versatility, talent, and captivating on-screen presence. She has appeared in a wide range of films across multiple languages, including Tamil, Telugu, Kannada, and Malayalam. Her performances in movies like "Allari" (2003), "Mast (2004), "Thimiru" (2007), and "Lakshyam" (2007) cemented her position as a leading lady in the southern film industry.
In 2017, she participated in the inaugural season of Bigg Boss Tamil , hosted by Kamal Haasan. Her stint was marked by controversy regarding her interactions with fellow contestant Oviya.