Months after announcing her pregnancy in December, the Duchess of Cambridge Kate Middleton stepped out in public Tuesday, displaying her growing baby bump to a throng of excited onlookers. Three months into her pregnancy, our crew spotted the usually trim duchess exhibiting a budding belly, Daily Mirror celebrity reporter Stephanie Wood said of the expectant Middleton, who reportedly showed off her ballooning middle after leaving a routine appointment at St. Thomas Hospital. Though the duchess appeared a little fatigued, we can hardly blame her. After all, shes smiling for two now! When reached for comment, Middleton appeared overwhelmed by her highly anticipated bundle of joy, saying only, I cant believe this is happening, before royal guards escorted the weary mommy-to-be back to her private quarters at Buckingham Palace. 