“After what felt like a year long third trimester… it finally happened!!” Luddington, 36, wrote on Instagram along with a photo of herself with her newborn in the hospital bed.
She added, “Matt and I are SOOO happy to announce the birth of our sweet baby BOY Lucas, otherwise known as my little lion (shoutout to Leo’s!).”
Luddington and the 41-year-old “13 Reasons Why” actor already share 3-year-old daughter Hayden.
Luddington opened up about choosing their baby’s name, saying that it was an easy decision.
“[Lucas] was the only boys’ name my husband and I ever really liked,” she recently told People, adding that the moniker “topped our boys’ name list back when I was pregnant with Hayden.”
She also said that she wasn’t expecting to have a boy.
“This time, we were also convinced I was having a girl again because my morning sickness was so bad, so we were already thinking of new girls’ names,” she said in the interview. “When we found out we were having a boy, we knew instantly he would be Lucas! His middle name is my husband’s [first name], Matthew.”
She first announced she would be having another baby in March.