Sampson, 40, gave birth to Luke Sampson Busey on Feb. 23 at 6:40 am. The newborn, the couple's first child together, weighed in at 6 lbs., 7 oz, according to the site. "This feels like a dream," the couple said in a statement to ET. "We feel so blessed and are overwhelmed with happiness at Luke's arrival."
Busey, 65, and Sampson announced they were expecting in December. This is the third child for the Academy Award nominee, who already has a son, 38-year-old actor Jake Busey, and a daughter, Alectra, from previous relationships. Busey will next appear on the big screen in the comedy Grown Ups, coming out this June.
Busey's rep could not be reached for comment.