The pair are already parents to 2-year-old son Art.
O'baby!
Bridesmaids star Chris O'Dowd and his wife, British TV presenter Dawn O'Porter, welcomed their second child on July 1.
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The couple announced the birth of son Valentine O'Porter via social media on Wednesday, alongside a sweet photo of the newborn.
"Happy to announce I am the proud owner of this chirpy little chap," O'Porter wrote. "Born July 1st, his name is Valentine O'Porter, and he is so delicious. Two sons, my goodness #soinlove."
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"We had a baby boy last week. Woohoo! His nappy expenses are ridiculous, so this baby is going ‘Cheep’. #DadJoke #Valentine," O'Dowd added on Twitter.
The couple, who married in 2012, are already parents to 2-year-old son Art.
While O'Dowd and O'Porter welcomed their second son, Lauren Conrad recently gave birth to her first. See more on The Hills star's baby, Liam James Tell, in the video below.