Karan Johar is planning a movie with Imran and Kareena Kapoor on the lines of Ashton Kutcher – Cameron Diaz’s 2008 Hollywood hit film, What Happens in Vegas. For this, he wants Kareena to go back to being size zero once again.

The planning for the movie which is titled Short Term Shaadi has started and Kareena’s look for the film is going to be striking. If buzz is to be believed, she will go in for a short hair-cut for the movie to look as young as Imran.

About Kareena going back to her anorexic days, a source says a daily, “It is ironical. Kareena had just started eating to look slightly rounded because her boyfriend Saif Ali Khan is tired of her looking like a clothes hanger.”

The actors and makers are tight-lipped about the project.