If some 'very strong' rumours are to believed, screens are definitely about to be set ablaze as Bollywood hottie Kareena Kapoor trims down to size zero yet again to pair up with tinsel town poster boy Imran Khan for an upcoming Karan Johar project.

According to sources, the film is expected to go on floors in November and currently Karan is finalising the characters' appearances, locations, et al.

Reportedly titled 'Short Term Shaadi', the movie is apparently based on the lines of Ashton Kutcher - Cameron Diaz starrer Hollywood rom com What Happens in Vega, a film where the characters stay married only to keep their earnings won off a Vegas casino as a married couple and then fall in love.

Even though Imran and Kareena both have refused to reveal anything about the movie, it has been heard that Karan has asked Bebo to lose weight for the film.

Reportedly Bebo has also been asked to cut her hair short for the movie.

A close friend of Kareena's revealed that this might come in as a slight disappointment to Kareena's boyfriend actor Saif Ali Khan, who was "tired of her looking like a coat hanger".

And just when she was eating well and getting back her curves, Kareena is again getting all set to become the ultra thin babe - a look she patented so well in 2008 Tashan that sent all her peers in a tizzy.

So apart from the film, what remains to be seen is, who gets to be the lead choice the 29-year-old actress: KJo or the Chhote Nawab.