The 20th annual Nickelodeon Kids' Choice Awards ("KCA") were held on March 31, 2007, hosted by Justin Timberlake. It was the highest rated show ever in the history of the Kids Choice Awards. The show was held at Pauley Pavilion at the University of California, Los Angeles. Gwen Stefani (with Akon) and Maroon 5 performed during the show. 　　Online voting began on March 5, 2007. A "...