Business tycoon and Reliance Industries chairman Mukesh Ambani and Nita Ambani’s daughter Isha will tie the knot with Anand Piramal, son of corporate magnates Ajay Piramal and Swati Piramal, in December this year, family sources said yesterday. Anand and Isha have been long-time friends and both the families have known each other for over four decades. Anand is the founder of Piramal Realty, one of India’s leading real estate companies. Isha is on the boards of Reliance Jio and Reliance Retail.