At the 2013 Kids' Choice Awards, Pitbull and Christina Aguilera didn't stop the party -- they started the party!

The pair performed 'Feel This Moment' to kick off the show, and they did it with a bang. Pitbull and Aguilera wore matching head-to-toe black, with the once (and likely future) coach of 'The Voice' rocking a fedora. Aguilera looked stunning, with understated makeup and a perfectly fitting outfit. (Keep up the good work, XTina!)

The duo were backed by a backing track, but it wasn't due to a lack of vocal ability. The pair were dancing like a mad man and mad woman, accompanied by tiny look-alikes that we'll call "XTinies" and "Pitbull puppies." It was incredibly cute!

And of course, you have to expect the unexpected at the Kids' Choice Awards, and Pitbull and Aguilera delivered. Or rather, Aguilera delivered -- she delivered slime all over Mr. 305!