The Eureka star tells People.com that she and Raffaele Fiore, her husband of almost two years, could not be happier with their new bundle of joy, who was born on 14 May (12).
The Canadian beauty says, "We have been blessed with the most perfect little 'peanut' - her nickname from my father, since she is so small!
"I thought I was in love with her when she was in my belly, but I am so much more in love now that she is actually here, in my arms. I can't stop staring at her, she is so beautiful and happy. We couldn't have asked for anything more!"
The Canadian star, who is best known for her role on sci-fi series Eureka, is due to give birth in late May (12) and she admits her journey to becoming a mother has been virtually worry-free so far.
She tells People.com, "I am so thrilled I am going to be a mother. I fall in love a little more each time my baby moves.
"So far pregnancy has been a breeze. Sciatica (pain in the lower back and leg) can be difficult, otherwise I have been very fortunate. Ultrasounds are probably my favourite - being able to see my little one. It’s all an amazing experience."
Cerra, 32, wed her high school sweetheart Raffaele Fiore in November, 2010.