Olivia Wilde just announced that she and fiancé Jason Sudeikis are expecting their second child with one of the sweetest maternity photos we've ever seen. The photo, posted on her Instagram account, shows the soon-to-be mother of two holding her growing bump, while her son, Otis, cradles his own tummy. "Matching baby bumps," Olivia wrote in the caption accompanying the black-and-white snapshot.
While some celebs keep their pregnancies under wraps for as long as possible, others prefer to spread the news on their own terms, be it via social media or on stage. From Beyoncé's unforgettable VMAs performance to Justin Timberlake's sweet kiss on Jessica Biel's belly, take a look at how these 22 famous parents-to-be shared their exciting baby announcements with their fans.