The sister trio appeared on Thursday's episode of the iconic children's show to sing a new tune explaining the ABCs alongside Elmo, Big Bird ... on Sesame Street," says Este, 37, who then plays ...

As a kid, you likely spent a lot of time learning your ABCs from characters like Cookie Monster, Big Bird, Elmo, and Oscar the Grouch. "Sesame Street ... they put the show together.

Big Bird (L) and other Sesame Street puppet charactors pose next to ... Adam Rosenberg is a Senior Games Reporter for Mashable, where he plays all the games. Every single one.