Frozen Fever is a 2015 American computer-animated musical fantasy short film produced by Walt Disney Animation Studios and released by Walt Disney Pictures. It is based on the 2013 feature film Frozen, and tells the story of Anna's birthday party given by Elsa with the help of Kristoff, Sven, and Olaf. Chris Buck and Jennifer Lee again served as the directors with Kristen Bell, Idina Menzel, Jonathan Groff, and Josh Gad reprising their roles from the first film.
Production on Frozen Fever began in June 2014 and took six months to complete. The film debuted in theaters alongside Walt Disney Pictures' Cinderella on March 13, 2015. It received positive reviews from critics, along with praise for its new song "Making Today a Perfect Day" by Kristen Anderson-Lopez and Robert Lopez.