No further details were revealed, though reps say the couple are "ecstatic" about their new addition.
The pregnancy rumors first began buzzing in late October when a source close to Biel mentioned the 7th Heaven star was about three months along. Various Instagrams and paparazzi shots later revealed Biel's growing bump, but the couple remained tight-lipped. Us Weekly officially confirmed the news in November, but the real confirmation came in December when former *NSYNC member Joey Fatone spilled the baby beans. "He told me a while ago," Fatone said. "But, now I can talk about it!"
And, now he can actually say hello to Silas! Bring on the poopy diapers, little man.