Vidya Balan's item song pose threat to Kareena, Katrina

After revealing 'oomph' factor in The Dirty Picture, Vidya Balan is all set to sizzle on-screen yet again with an item song in Vidhu Vinod Chopra's Ferrari Ki Sawaari.

Vidya and the team are apparently taking every effort to ensure that this item number is not only hot and sizzling, but also different from 'Chikni Chameli', 'Sheila Ki Jawani', 'Munni Badnaam' and other recent hit item songs.

Vidya Balan wants to look extremely glamorous in the song and will try 10 different looks before making her decision. Feedback from filmmakers and stylists are also being considered. Vidya is also apparently working hard to lose the few extra kilos that she had gained for the film The Dirty Picture.

Well, Katrina, Malaika and Kareena...better watch out for the new item girl in tinsel town!