Peter, who is known for his portrayal of Tyrion Lannister in the popular HBO series, has been married to his gorgeous other half for 12 years.
And now, the 48-year-old acting legend has expanded his brood with Erica, 42, Us Weekly report.
The notoriously private couple didn’t officially confirm their pregnancy, but Erica debuted her baby bump back in March on a red carpet appearance for All The Fine Boys – a play that she wrote and directed.
Erica was joined in New York City by her husband, who stood proudly by his wife for the bump debut.
Erica married Peter in 2005, and the couple welcomed their first child, a daughter, in 2011.
However, they have never revealed her name to the public.
Hodor actor Kristian Nairn is unrecognisable compared to his GoT character [Facebook/Getty]
The private couple opened up about their baby girl shortly after her birth, during the Golden Globe Awards in 2012.
Peter, who won one of the coveted awards, revealed to People Magazine at the time that it was the first time he and Erica had left their daughter with a babysitter.
He said: “Everything’s fine – so far. She’s a baby. Crying never killed anyone. Well, maybe that’s not true.”
And just the year before, while accepting an Emmy Award for his role in Game of Thrones, Peter gave a sweet shout out to his wife.
“I love you, Erica. You’re amazing,” he told the crowd during his acceptance speech.