The producer's daughter will make her Bollywood debut in the campus drama Student of the Year.
She told Mid Day: "I am just 19, I finished school and just walked into movies. So I am really scared and nervous as to how it will turn out to be. I didn't plan this, it just came along and I am enjoying every bit of it.
"Every now and then my dad tells me where he feels the need but I like to be on my own and I want to learn from my mistakes."
Alia recently said that she decided against making her first appearance in a film by her father Mahesh Bhatt.
Karan Johar's Student of the Year centres on three friends competing to win the eponymous title at their elite school.
The movie's producer and director performed a religious ritual on the set after a series of mishaps during the shoot.
Watch the trailer for Student of the Year below: