She will be seen starring opposite the veteran actor in an untitled Yash Raj project.
The Hong Kong-born star told PTI: "With regards to Shah Rukh, I did not know him that well at all. I would have said five words to him in my entire life. With SRK, who is a superstar I have worked with this year, after being in the industry for nine years.
"You constantly see that person on TV, in media, movies and everywhere. So for me a little sense of intimidation was there when you are actually in front of him which I later found funny.
"When I started working with him, it was great. Shah Rukh as an actor is extremely dedicated, he is not thinking about himself or not thinking about how many years he is in the industry.
Kaif recently revealed she had been "desperate" to appear on screen with Khan.
The unnamed production centres on a romance between a married writer looking for inspiration and a young woman who is just like his imaginary muse.