Juhi, last seen in Ravi Chopra's "Bhootnath", will play veteran actor Rishi Kapoor's wife in the film.
"Playing Minty was so much fun! And moreover I got to colour my hair blonde, which was something I had never done before, " said Juhi.
"When Zoya offered me the role I was extremely thrilled. Even though I was told it was not a big role, I didn't mind as it was different from all the other characters I have played before, and that was the most exciting part, " she added.
"Luck By Chance", releasing Jan 30, stars Farhan Akhtar and Konkona Sen Sharma and has a much-hyped guest appearance by superstar Hrithik Roshan.