After a two-hour season finale, Dancing with the Stars has new champions! J.R. Martinez and Karina Smirnoff won the coveted disco dance ball trophy, they are the 13th winners on Dancing with the Stars. Rob Kardashian and Cheryl Burke came in a close second place. In fact, both teams got perfect 30 out of 30 scores from the judges for their performances. The whole cast of Dancing with the Stars 13th season came back to dance, and to celebrate the victory of JR. and Karina.