Sharing that Christmas came a bit early for the couple, the proud new papas sent out a birth announcement to family and friends that included a sweet snapshot of their son inside a festive stocking.
In October Murphy hinted at pending parenthood, telling The Hollywood Reporter he was hoping to start a family soon.
"I think I'll be incredibly fun and overwhelmed and all about manners," he said. "I'm excited to have somebody or something come in and say: 'Really? I don't care what you think. I'm going to do what I want.'"