Who was the first speaker to discard the official wig and presided over the house wearing the gandhi cap?

The first speaker to discard the official wig and preside over the house wearing the Gandhi cap was G. S. B. K. Rao. He made this change during his tenure, reflecting a shift towards a more informal and relatable style of leadership in the Indian parliamentary system. The Gandhi cap became a symbol of the Indian independence movement and was associated with leaders advocating for simplicity and connection with the masses.