The actress plays a Tamilian Iyengar girl who falls in love with a Punjabi boy.
A source close to Bhatt told IANS: "She is learning the Tamil culture and tradition. She has also hired a special Tamilian teacher who will help her to adapt the south Indian culture."
The 19-year-old star was recently featured wearing traditional South Indian saris in a photo shoot with 2 States co-star Arjun Kapoor, who replaced Imran Khan to take the lead role.
The film adaptation of Chetan Bhagat's novel 2 States is directed by Abhishek Verma and co-produced by Karan Johar and Sajid Nadiadwala.
The daughter of film director Mahesh Bhatt, Alia made her debut in Karan Johar's Student of the Year last year.
2 States is scheduled to release in 2013.
Watch a trailer for Student of the Year below: