Alfonso Ribeiro took home the Mirrorball Trophy in 2014 Alfonso Ribeiro is heading back to the ballroom — this time as a cohost! On Thursday, ABC announced that the Fresh Prince of Bel-Air alum, 50, will be cohosting the 31st season of Dancing with the Stars alongside current host Tyra Banks. “I’m super excited,” Ribeiro, who took home the Mirrorball …