Gordon and his wife Ingrid Vandebosch, both 39, welcomed son Leo Benjamin on Monday at 8:53 a.m. He weighed 7 lbs, 2 oz., and measured 19 inches long.
"He's happy and healthy, and Mom is doing great," Gordon writes on his official Web site where he announced the news.
Baby Leo joins big sister Ella Sofia, 3.
After sharing the news about his growing family in February, Gordon and Vandebosch revealed the next month that they were expecting a baby boy.