The model-turned-actress made her debut in the melodrama opposite Ranbir Kapoor.
She told IANS: "I wasn't supposed to be an actress, but when I heard the story of Rockstar, I was like, 'Oh my god! I so wanted to do this'. So acting happened by accident.
"I always feel that God has blessed me with many good things in life and he gave me so many wonderful opportunities in my life. I never say no to adventure and this is the reason why I was not able to say no to my debut film, because the story was beautiful. When you feel something in the heart, then you can't say no to it."
Fakhri was reportedly dropped from the action film Khiladi 786 for being "too beautiful" to play lead actor Mithun Chakraborty's sister.
Last year, she admitted that she found the transition from modelling to acting in Rockstar "tough".
Watch Rockstar's trailer below: