After winning the Ford Godrej Cinthol contest, Basu was flown to New York by the Ford Company, where she had a successful modelling career at the age of 17. Basu made her film debut in Abbas Mustan's Ajnabee, with Akshay Kumar, Bobby Deol and Kareena Kapoor. She played a married woman who goes all out to woo her husband’s married friend, and eventually won the Filmfare Best Female Debut Award for her performance.
