© Matthew Bamberg | Dreamstime & Press Association

LOOK: Jack Antonoff Reveals 'Sesame Street' Appearance With On-Set Images

By: Scott T. Sterling

December 18, 2017

Jack Antonoff went to Sesame Street and he’s got the pictures to prove it.

The Bleachers’ principal shared a series of photos and videos from the legendary children’s show, including a personal message from Oscar the Grouch for his godson, Alfie.

Of course, it was in a way that only Oscar the Grouch could greet a child, right? 

hi alfie --

A post shared by jack antonoff (@jackantonoff) on

Antonoff shared photos with Bert and Ernie too:

A post shared by jack antonoff (@jackantonoff) on

Sesame Street also posted a photo from Antonoff’s appearance, thanking him for visiting the set.

A post shared by jack antonoff (@jackantonoff) on

Antonoff will appear on the upcoming 49th season of Sesame Street, which will premiere next year.

EXCLUSIVE: Jack Antonoff Uses Three Words to Describe Lorde, Taylor Swift & More: