Born on June 27, 1970, in Mumbai, Devayani began her acting career at a young age. She made her debut in the Tamil film industry with the movie "Chinna Vathiyar" in 1995. Her early years in cinema were marked by a string of successful films, including "Gnanapazham" and "Thiruvazhagi." Her performances earned her recognition, and she quickly became a sought-after actress in Tamil cinema.