"Alyson is thrilled to be pregnant!" a source close to the star tells Us Weekly. "She's been wearing baggy clothes to cover the baby bump." Thankfully, Hannigan won't have to crouch behind couches or wear oversize dresses to hide her belly on her hit CBS sitcom -- her HIMYM character, Lily, is also currently expecting!
"[Being a mother] has changed me in every way because my life is so much greater," Hannigan told Us Weekly in May 2010. "It filled a void I never knew was there -- it's the most amazing experience of my life. I just feel so blessed to get to be on this journey, to be a mommy. [Satyana] is just the greatest baby.