The trailer of Disney's upcoming animated short film Olaf's Frozen Adventure has been released. The 21-minute long featurette will star the original cast members from the 2013 film Frozen with Josh Gad reprising his role as Olaf, Kristen Bell as Anna and Idina Menzel as Elsa. Olaf's Frozen Adventure has been directed by Kevin Deters and Stevie Wermers-Skelton.