"He has really stepped up to the role and is very hands-on. It makes me proud that he is such a good dad," Kerr said.
Flynn celebrated his first birthday on January 6 and Kerr baked an organic cake for him.
"It was the first cake he had ever seen or tasted. It was a gluten-free cake and organic, of course. He put his face in the cake. It was a healthy kick-start to his first birthday."