In addition to singing talent, expect to see Williams exhibit some truly "dynamic flying" in the December 4 telecast, according to the official press release.
"Allison Williams is a major find," executive producers Craig Zadan and Neil Meron said in a statement. "She will reinvent the iconic role of Peter Pan with her wit, her warmth, her dynamic flying, and her wonderful musical abilities. The score will be sung beautifully and introduced to a whole new generation of families."
"I have wanted to play Peter Pan since I was about three years old, so this is a dream come true," Williams said. "It's such an honor to be a part of this adventure, and I'm very excited to get to work with this extraordinarily talented team. What could go wrong in a live televised production with simultaneous flying, sword fighting, and singing?"
NBC's chairman Robert Greenblatt added that Williams "will bring the perfect blend of 'boyish' vulnerability and bravado to save the day against Christopher Walken's powerful Captain Hook."