The 37-year-old had launched her search on twitter a month ago, asking her followers on the micro-blogging site to email photos of girls between the age of four and seven who could play a young Preity.
"Thank you 2 all of you who sent kiddie photos 4 the role of mini me (my childhood) in 'Ishkq In Paris' (sic)! The role has been cast finally," she tweeted.
"Ishkq in Paris" is a romantic comedy directed by Prem Soni and Preity is making her debut as a producer with it.