Frozen Fever (2015) 冰雪奇缘：生日惊喜

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 a sequel to the 2013 feature film Frozen, and tells the story ofAnna'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 providing the lead voices.

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.

On Anna's birthday, Elsa and Kristoff are determined to give her the best celebration ever, but Elsa's icy powers may put more than just the party at risk.