Star's security beefed up after girl in Delhi mall threatens to kill herself if he doesn't autograph her back; fianc © watches helplessly

Ranbir Kapoor's female fan following is growing by the day. And growing more insane, may we add. Fans from out of town have been spotted outside the Kapoor residence, Krishnaraj, carrying suitcases.

The scene is reminiscent of the clamouring crowds outside Rajesh Khanna's bungalow when he was a superstar. While Kapoor shrugs off the unwanted attention, it's left to his mother Neetu Kapoor to be kind to the hysterical fans who have nowhere to go.

However, the star mom was not around on Thursday, when an exceptionally crazed female fan threatened to jump off the first floor of a mall in Delhi if Kapoor didn't autograph her, err, bare back. The actor was at a loss when he saw a girl in white, at a crowded mall in New Delhi, waving frantically from the floor above, threatening to jump down to be near him.

Says an eyewitness, "At first, Ranbir waved and smiled at her. But when he saw that she was trying to jump off the balcony, he sent someone from his team to fetch her down. He thought he would sign an autograph and send her packing. "

What followed was pure melodrama with the girl threatening to strip her clothes if Ranbir didn't click a picture with her. Says the eyewitness, "All along, the girl named Anuradha, kept yelling that she'd kill herself if Ranbir didn't oblige.

The funniest bit was that her fianc © was with her, and the poor guy didn't know how to handle her. Ranbir panicked. He did whatever he could to make her happy and decided to beat a hasty retreat.

But the girl, with her fianc © running frantically after her, chased Ranbir to his car and insisted on getting in with him. "

That's when the security guards took charge of the situation and led her away.

More than Ranbir, the incident has left mother Neetu shaken. The family has decided to employ bouncers to accompany the star to out-of-town events.