AceShowbiz -

Rihanna and Justin Bieber brought the fun to the stage of the 23rd Annual Nickelodeon's Kids' Choice Awards. The Barbadian songstress was the first to sing at the March 27 ceremony, followed with live performance from the Canadian pop star.

Rihanna appeared on stage, riding a mini pink-camouflage tank with a troop dressed in military outfit. Kicking off her set with "Hard", she continued with "Rude Boy" and traded her military troop with two robots, similar to the ones with whom she made a duet at Echo Awards earlier this month. Before exiting the stage, she delivered "Don't Stop the Music".

A while later, Justin performed "Baby", drawing young fans to come closer to the stage. The 16-year-old singer danced energetically during the set and even tackled the rapping part originally delivered by Ludacris. On his appearance at the awards show, he tweeted, "Great day today....had alot of fun and got to see some great friends. congrats to @selenagomez and all the other winners 2nite."

2010 Nickelodeon's Kids' Choice Awards was held at UCLA's Pauley Pavilion over the weekend. Taylor Swift won two prizes; Favorite Song for "You Belong with Me" and Female Singer and Miley Cyrus grabbed Favorite Movie Actress, beating Sandra Bullock, Megan Fox and Zoe Saldana. Other young artists went home with a trophy each were "Twilight" hunk Taylor Lautner as Favorite Movie Actor and "Wizards of Waverly Place" star Selena Gomez as Favorite TV actress.

Rihanna:

Justin Bieber: