Amelle Berrabah is already causing tensions since joining the Sugababes last month.
The singer was announced as the replacement for Mutya Buena, who quit the group "purely on personal reasons".
Berrabah has apparently bonded quickly with Heidi Range, however Keisha Buchanan isn't happy about their friendship.
A source told the The People, "Heidi and Amelle get on really well and Keisha is feeling left out."
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