Earlier this month, the 31-year-old star revealed to E! she was ready to meet her bub.
"I'm ready to go," Seyfried said at the time. "I'm ready to meet the kid!"
Meanwhile Sadoski, 40, said he was “terrified” but couldn't be more excited. He also revealed, "She gets the singing. I do the diaper changing."
Seyfried first announced her pregnancy while promoting Givenchy's new fragrance in November.