Nick Jonas is singing beautiful lullabies these days! The Jonas brother, 29, and his wife, Priyanka Chopra, 39, welcomed their first baby, a daughter, via surrogate on Jan. 15. The couple, who wed in Jodhpur, India, in late 2018, kept the pregnancy under wraps the entire time, “which is not easy to do in Hollywood,” says a source. “They’re super private, but they also didn’t want to jinx anything.” Of course, when their little girl was born, they were so excited they had to share the news with the world. “We are overjoyed to confirm that we have welcomed a baby via surrogate,” Priyanka announced in an online post. The actress always wanted kids. “When the time is right, it will happen,” she assured everyone shortly after their wedding. “It’s…