Singer Beyonce and hip hop mogul Jay Z are officially parents to… baby girl Blue Ivy Carter! Beyonce reportedly gave birth at New York’s Lenox Hill hospital last night via a scheduled c-section. Their celebrity friends are already tweeting their love for the couple and Baby Blue; Gwyneth Paltrow said “Welcome to the world Blue! We love you already. Rihanna wrote “Welcome to the world princess Carter! Love Aunty Rih.” What an exciting time for Beyonce and Jay congratulations! What do you think of the name Blue Ivy Carter?