updated 06/14/2012 AT 10:00 AM ET
•originally published 06/14/2012 AT 11:15 AM ET
His grandfather thinks he has an idea.
“I sent my dad this pic and he said ‘luca told me to tell u, u made his oatmeal lumpy’ lol,” the actress, 24, Tweeted. “He is cute when he’s mad!”
And her adorable son (even when he’s crying) keeps the new mom happily occupied.