Varanasi, Nov 02 (ANI): Reliance Industries chief and billionaire Mukesh Ambani's wife, Nita Ambani celebrated her 51st birthday in Prime Minister Narendra Modi's constituency, Varanasi. Nita Ambani is also the Founder and Chairperson of the Reliance Foundation, which is the philanthropic arm of Reliance Industries. As a part of the celebrations, Ambanis also attended a special prayer service (religious rituals) at Kashi Vishwanath temple in the holy city. Nita Ambani also performed the Ganga Aarti at the bank of River Ganges. Highlight of the day the famous ritual of lights 'Aarti' at the Dashashwamedh bank of river Ganges, witnessed by the Ambanis and the guests seated in four houseboats, which were especially decked up for the occasion.