The series pilot episode “Once Upon a Princess”, premiered on November 18, 2012, on Disney Channel, featuring a cameo from Cinderella. The 3 good fairies from Sleeping Beauty were also introduced as teachers. The series itself premiered on January 11, 2013, on Disney Channel during its Disney Junior block. Disney Junior renewed Sofia the First for a second season on March 5, 2013, and then the series was renewed on January 8, 2014. The show’s second double-length episode, The Floating Palace, aired on November 24, 2013, with an appearance from Ariel. The third double-length episode, The Curse of Princess Ivy, aired on November 23, 2014, featuring Rapunzel. On April 14, 2015, the series was renewed for a fourth season by Disney Junior. Gerber clarified in December 2016 that it would begin in spring 2017 and have 24 22-minute episodes plus 2 60-minute specials.