Frozen Fever trailer released

Olaf is back in Frozen Fever. Picture: Youtube

The first glimpses of the follow-up to Disney's mammoth hit Frozen have been revealed in a new trailer released this week.

Elsa, Anna and Olaf are back in the mini-movie Frozen Fever which will be seen in cinemas before screenings of Cinderella.

The 40-second trailer, which features a new song, shows the Elsa (voiced by Idina Menzel) and Olaf preparing a birthday party for her sister Anna (Kristen Bell).

In the movie, Elsa magically makes her own full-length emerald gown and a playful birthday frock for Anna.

Discussion of the trailer has already made the movie title a trending topic on social media, with fans saying the short movie may even eclipse the main event.

"I'd only go watch Cinderella for this, really," wrote one social media user.