Actress Allison Williams gushes to Rach about toddler son Arlo, and what it’s like being a new parent.
"He's really really cute. I'm really obsessed. I understand what all the hype is about parenthood-wise. Every time my brain has a moment to think about anything, that's where it goes. We're very happy," says Allison. "He's a ham!" she adds. Aww!