Mumbai: Bollywood star Sanjay Dutt's twins, son Shahraan Dutt and daughter Iqra Dutt, penned heartfelt birthday wishes for their father on his 67th birthday on July 29. Calling him the "best dad" and thanking him for his constant love, support and encouragement, both the children penned emotional notes for Sanjay Dutt on their respective social media accounts. Alongside the picture, Shahraan wrote, "Happy birthday to the best dad anyone could ask for. For the uninitiated, Sanjay Dutt who turned 67 on July 29, married actress Maanayata Dutt in 2008. For the uninitiated, Sanjay Dutt is the son of legendary actors Sunil Dutt and Nargis.