The best place to see stars this weekend in L.A. wasn't a red carpet -- it was a Yo Gabba Gabba concert on Saturday night!
Gwen Stefani, Jack Black, Jessica Alba, Nicole Richie, Dave Grohl, Carson Daly, Milla Jovovich and all their children invaded Nokia Live to catch the "There's a Party In My City" live show.
With Nicole dancing on stage and Gwen getting some one-on-one time with DJ Lance, it's hard to figure out who was having a better time -- the kids or the adults!
Check out all the fun photos!
