Selma Blair became a mom on Monday, welcoming son Arthur Saint Bleick into the world.
A rep for the actress tells People that the little one weighed in at 7 lbs., 12 oz. Arthur is the first child for Blair and her fashion designer boyfriend, Jason Bleick.
The couple, who met while collaborating on Bleick’s EVER fashion line, announced their pregnancy in January, but opted to keep the baby’s sex under wraps.
Blair earned a 2011 Grammy nomination for her work on the audio book, Anne Frank: The Diary of a Young Girl: The Definitive Edition, in the Best Spoken Word Album for Children category.