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Now trending: #royalbaby

Prince William, Duke of Cambridge and Catherine, Duchess of Cambridge, announced they were expecting their first child Monday.  (Photo by Indigo/Getty Images)

Prince William, Duke of Cambridge and Catherine, Duchess of Cambridge, announced they were expecting their first child Monday. (Photo by Indigo/Getty Images)

The Duke and Duchess of Cambridge are expecting a baby—and their bundle of joy has already kicked off plenty of Twitter fodder.

While the Duchess, Kate Middleton, remained in the hospital with acute morning sickness, well-wishers from around the world and political spectrum weighed in on the news.

Palace officials said that her pregnancy was in the early stages.