India, Nov. 15 -- Pop-punk star Avril Lavigne has a new little rockstar in her life! The 42-year-old singer has welcomed her first child, a baby girl, sharing the news with the cheeky caption, "Our Mini F-king Princess has arrived." But while Lavigne offered fans a glimpse of her newborn, she kept two details under wraps: her daughter's name and the identity of the baby's father. The surprise reveal comes after Lavigne kept her pregnancy out of the public eye. The singer also shared a photograph of three pairs of checkered shoes, including a tiny pair for her newborn, placed on a skateboard. HTC...