Elizabeth Banks and her husband, sports producer Max Handelman welcomed a son, Felix Handelman and the "30 Rock" actress confirmed the news in her personal blog on Wednesday.
"I have been very fortunate in life both professionally and personally," Banks wrote in her blog. "I have had untold number of opportunities to work with inspiring people, on great projects as an actress, and I have had a fantastic long term relationship of nearly 20 years with my now husband, Max."
In her entry, Banks, 37, addresses her difficulties with fertility and how the couple came to use a surrogate.
"The one true hurdle I've faced in life is that I have a broken belly," Banks wrote. "After years of trying to get pregnant, exploring the range of fertility treatments, all unsuccessful, our journey led us to gestational surrogacy: we make a 'baby cake' and bake it in another woman's 'oven.'"
"From that came two miracles," Banks continued. "The first was meeting our carrier and her husband who were truly humbling in their decency and generosity. And the second miracle was the birth of our baby boy, Felix Handelman. Felix means 'happy' and 'lucky' in Latin. And true to his name, Felix is a very happy baby and a blessing on our life."
On Wednesday afternoon, the actress, who has also starred in movies like "Zack and Miri Make a Porno" and "The 40-Year-Old Virgin," also spoke of her joy on Twitter.
"What's greater than overjoyed? Megajoyed?" Banks asked her Twitter followers. "Add humility, love, awe. Sprinkle w cute. Result: my new life as a mom. It's a boy!"
Banks and Handelman, who met on their first day of college at the University of Pennsylvania in 1992, got married in July, 2003.
On "30 Rock," Banks plays Alec Baldwin's love-interest, Avery Jessup who welcomed a baby girl with Jack Donaghy in a February 2011 episode.
Banks most recently starred alongside Tobey McGuire in "The Details," which aired at the Sundance Film Festival in January. Her next release is "Our Idiot Brother," which co-stars Paul Rudd and Zooey Deschanel and is slated for release on August 26, 2011.