Robert De Niro and Jane Rosenthal chat with ET’s Rachel Smith ahead of the Tribeca Festival in New York City. De Niro gushes over his and partner Tiffany Chen’s 1-year-old daughter, Gia, and says she���s ‘pure joy.’ Plus, he shares how they recently celebrated her birthday. Robert De Niro and fellow co-founder of the Tribeca Festival, Jane Rosenthal, also give an inside look at what to expect at this year���s festivities, which take place June 5-16. The last weekend of the festival, called ‘De Niro Con,’ will feature reunions, screenings and fan activations.