Demi Lovato replacing Katy Perry as the voice of Smurfette

Demi Lovato is replacing Katy Perry as the voice of Smurfette in the third Smurfs feature film.

The 22-year-old singer will voice the part in the sequel 'Get Smurfy' and takes the place of Katy, who starred in the first two films released in 2011 and 2013.

In a promotional video released to introduce the new casting, the Heart Attack singer said: "I'm so excited to announce that I will be voicing Smurfette in the new fully-animated Smurfs movie."

The movie will set out to tell the origin story of the blue creatures, with comedic actor Rainn Wilson, 49 - known in the US for being funnyman Dwight Schrute in 'The Office' - playing the evil wizard Gargamel and Mandy Patinkin, 62, voicing Papa Smurf.

Although majority of Demi's fans are thrilled with the announcement, as her career began on the Disney Channel's Camp Rock, other aren't quite sure.

#Smurfette ain't gonna be the same without @katyperry's voice 😭😪😩😟😭 pic.twitter.com/H29Na6HzHP

— DIANA RC ❤️‍🔥⚽️ (@Diana10Rojas) June 15, 2015