Nicole Richie & Joel Madden: Yo Gabba Gabba! Performers!

Nicole Richie and fiance Joel Madden carry their adorable little ones — Harlow, 2, and Sparrow, 14 months — at the “Yo Gabba Gabba! Live! There’s A Party In My City” held at Nokia L.A. Live on Saturday (November 27) in Los Angeles.

Nicole, 29, and Joel, 31, even joined Yo Gabba Gabba! to perform choreographed dance moves on stage. How dedicated of them!

P.S. How adorable is Sparrow?!

30+ pictures inside of Yo Gabba Gabba! performers Nicole Richie and Joel Madden…