The trio have enjoyed huge success through their roles as Elsa, Anna and Olaf respectively in the much-loved Disney animated movie. With a sequel to the 2013 film in the works, Idina, Kristen and Josh reprised their characters at a charity benefit for Idina's A BroaderWay Foundation.

Both Idina and Kristen dressed down in comfy, casual outfits for the occasion, but it was their voices that took centre stage as they performed together for a delighted audience.

Kristen posted a picture of herself standing behind a microphone alongside Idina, with the caption: "Singing #frozen songs with the effervescent @idinamenzel at a benefit for her @abroaderway foundation :)"

Meanwhile, Josh, who enjoyed a few lines as loveable snowman Olaf, also shared a cute picture of the trio together, writing: "Team #Frozen back together again. Love these girls!"

Guests at the benefit were also treated to Kristen performing More Than Just the Spare - a song that didn't make the cut for the Frozen soundtrack.

Josh shared a short video clip of the song on his Instagram page, writing: "I mean who sounds like this at 10 AM?!!!"

Idina and her ex-husband Taye Diggs set up their foundation in 2010, to help young women from urban communities have the opportunity to express themselves creatively through arts-centred programs.

Disney's confirmation that they had authorised a sequel to Frozen in March 2015 came as little surprise to many considering the immense worldwide success of the original film.

There has also been a spin-off short, Frozen Fever, which was released in 2015 and Idina's page lists an Untitled Frozen Holiday Special as a television movie slated for release in 2017.