The film's trailer will be launched Friday.
To spread a buzz about it, Alia has posted an engagement card on social networking platform Twitter.
The card read: "As esteemed members of the family, you are invited to the engagement ceremony (or the '2 States' movie promo launch) between Krish Malhotra (Arjun Kapoor) and Ananya Swaminathan (Alia Bhatt).
"Please come and bless the couple on: Feb 28, Mahurat: 12 noon, Venue: YouTube, Twitter, Facebook or generally all over the web. No gifts or flowers please. Shagun only in the form of movie tickets on wedding (film release) day."
Alia also posted an intriguing message with the card: "I'm getting engaged."