Watch Brian Williams report Allison Williams' 'Peter Pan Live' news

Brian Williams is a bit of a cool dad (or as Hannah Horvath of Girls might put it, a “kewl dad”): He’s up with the rhymes the kids are throwing around these days, and hey, he’s even chill when watching his daughter, Allison Williams, replicate sex on Girls. (Let’s all take a moment to imagine him visiting the set, asking, “You guys need anything? Some snacks? Condoms? Let me know!”)

So when the news broke yesterday that his daughter had been cast in NBC’s Peter Pan Live, it was time for Williams to prove his real cool-dad cred. He didn’t let on that Allison was his daughter, but (how could you resist?) he did drop a childhood photo of her already in costume.