Celeb Babies Make Their Digital Debut

Welcome to the world (wide web)! Carrie Underwood gives us a sneak peek at her baby boy, Christina Aguilera snaps her lil' diva and more social stars introduce their babies online

BLUE IVY CARTER: TUMBLR

Like mother, like daughter! Just four weeks after the arrival of her first child, a glowing Beyoncé proudly shared a snapshot on Tumblr.