Jimmy Fallon & The Roots Perform "All About That Bass" With Meghan Trainor On The Tonight Show

Jimmy Fallon and The Roots grab their classroom instruments and join singer Meghan Trainor for a performance of "All About That Bass" on The Tonight Show. Their rework of Trainor's super sassy, bottom-heavy jam is just as bubbly as the pastel colored official video for the track. Trainor's performance of the bright single follows the June release of the track and the cute collaborative set practically begs for a kid-friendly reprise featuring The Roots crew and their friends The Muppets. The best part of this clip is watching Jimmy Fallon and The Roots have as much fun with the track as Meghan Trainor. Check the footage below to watch their performance of "All About That Bass." Purchase Meghan Trainor's single via iTunes. Stay tuned for more from The Tonight Show starring Jimmy Fallon.