It would make sense that first-time mommy Nikki Bella, 36, would turn to her twin Brie for baby stuff given that she’s been a pro at it for a couple of years now (she and husband Daniel Bryan already have a 3-year-old daughter named Birdie on top of a newborn son who she gave birth to on August 1). “Nikki has really been leaning on Brie and also her sister-in-law Lauren for baby advice,” a HollywoodLife source revealed EXCLUSIVELY.