Megastar Amitabh Bachchan turned 'kakosa' for a contestant from Rajasthan during a recent shoot of "Kaun Banega Crorepati 6", when he agreed to wear a traditional turban.

Nathusingh Bhagrot, a hot seat contestant from Rajasthan got a 'Mewadi pagdi' (turban) for the veteran actor, and was extremely happy when Big B decided to wear it.

"When Bachchan wore the pagdi, he was looking like a typical Rajasthani kakosa," Nathusingh said after the show.

Big B turns 70 Oct 11, and his well-wishers have already started showering him with gifts.

Huge celebrations are reportedly planned for the D-day. Big B's wife, Jaya Bachchan has planned a big bash for the special day, and plans have been kept closely guarded.

Designer duo Abu Jani-Sandeep Khosla have helped Jaya with the planning, and have even designed a special outfit for Amitabh to wear during the party.