Nita and Mukesh Ambani give to kids’ charities and Amitabh Bachchan’s showbiz relations gather for lunch – how do India’s most famous families celebrate Christmas?

While Nita oversees Reliance Foundation’s seasonal giving, Ranbir, Karisma and Kareena Kapoor join generations of Bollywood’s first family for lunch, while Alia Bhatt enjoys mum Soni Razdan’s home cooking