Malayalam and Tamil film actor Prithviraj, who is all set to make his debut in Bollywood, has developed a six pack for his maiden Hindi flick 'Aiyyaa', in which he is paired opposite actress Rani Mukherjee.

"I had to develop an ideal body. I was on a strict diet regime for about five months to get my act right", said the popular actor from Kollywood and Mollywood.

Meanwhile, the actor, who also has two films as producer to his credit, will soon make his third - a film called 'Arivaal Chutika Nakshatram' - in which Mammootty will be the hero.

"I play the villain in the film", says Prithviraj.

Prithviraj made his debut in 2002 in the Malayalam film 'Nandanam', and since then, he has acted in more than eighty films in the south.