Sara Tendulkar's pics with Arjun Tendulkar's fiance Saaniya Chandok go viral, know how they are related

Arjun Tendulkar, son of Indian cricketing legend Sachin Tendulkar, is now engaged to Saaniya Chandok. But who is Saaniya Chandok? What is the relation between Sara Tendulkar and Saaniya Chandok?