We smell a new squad in our midst!
However, it appears the epic collaborative performance gave an even cooler gift in the form of new best friends, Blue Ivy Carter and Apple Martin.
For the snap, the Oscar winner wrote:
Kristen Bell might have expected this from Nickelodeon, but PBS??
On a recent trip to Sesame Street, the Hit & Run star found out that all the world's a stain when she tried to teach kids the word splatter!
Oh well! That's what you get when you ask for help from Elmo and Abby!
For now, ch-ch-check out the bonus video AFTER THE JUMP to see Kristen's hunky hubby Dax Shepard grab his guitar and get amplified!