He beats up the bad guys on screen, oozes machismo, but when it comes to walking the runway, Bollywood hunk Abhishek Bachchan says he is all jitters.

"I am always nervous when I walk on the ramp," Bachchan told IANS on the sidelines of a big show here by designers Abu Jani and Sandeep Khosla.

"But they (the designers) are like my relations and that's why I came to participate in the show."

The whole Bachchan clan - Amitabh, Jaya, Sweta and Abhishek - wear Abu-Sandeep and have done so for years. Sweta Bachchan even wore Abu-Sandeep for her wedding.

"There is something special in their clothes which is why my family likes to wear them," said Bachchan, who wore a silver and gold sherwani for the event late on Tuesday night. "I consider them to be the most gifted designers in the world," he said.

The show was part of the weeklong Rajasthan Day celebrations that began March 21. The audience, which included Chief Minister Vasundhara Raje, was left enthralled when Abhishek Bachchan appeared on the runway with mother Jaya.

"We like the vibrant colors of Rajasthan," said Khosla about the collection. They also showed their special Pink City line and other collections like 'Raaga', 'Rung', 'Jamewar', 'Naqsh', 'Sequence Kilm', 'Chikan', and 'Sheesha'.