Just days after Britain’s Catherine, Duchess of Cambridge, and Prince William announced they’re expecting their first child, Lifetime today said it has picked up Secrets Of The Royal Nursery. The one-hour special will run on December 13, right after Project Runway All-Stars. Spun Gold TV is producing for the network. Lifetime says the behind-the-scenes special will feature interviews with “numerous friends and family of the celebrity couple and leading Royal Family experts.” Secrets Of The Royal Nursery also will look at the couple’s relationship, the state of the Royals and potential baby names for the heir-to-be.