. Also appearing as guest judges are past winners Joan Rivers, Piers Morgan, Arsenio Hall and John Rich, along with past judge George Ross, as well as Ivanka Trump, Eric Trump, and Donald Trump Jr. This season also introduced the Social Boardroom MVP reward. Viewers went on Twitter to select the celebrity they think did best in the task. The celebrity who received the most votes won additional money for their charity. This season premiered on March 3, 2013.