Chinese pop star G.E.M. (pictured left) revealed that she’ll be recording a song with Demi Lovato, Avril Lavigne and Ashley Tisdale. 

Speaking to Instyle, G.E.M, also said that the song has been written by Fall Out Boy.  All the stars are working on Disney's latest movie, 'Charming', which is due to be released next year (2016).

The animated comedy reinvents the stories of three familiar princesses — Cinderella, Snow White and Sleeping Beauty — in the unfamiliar plot twist of all being engaged to Prince Charming. 

G.E.M. will voice Sleeping Beauty, Ashley Tisdale will voice Cinderella, Demi Lovato will voice a character named Lenore, and Avril Lavigne will voice the classic Snow White.

Wilmer Valderrama has been cast as the voice for Prince Charming, opposite his real life girlfriend, Demi Lovato.

'Charming' is a 3QU Media Production of a Vanguard Animation film in connection with WVE. SC Films International is handling foreign sales. Production is underway at Cinesite’s animation studio in Montreal. The producer is John H. Williams who also produced 'Shrek'. 

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Watch a G.E.M. pop video, Demi Lovato on last week's Alan Carr: Chatty Man, and a news clip on Ashley Tisdale below: