有哪些外國歌手被傳不和？

Xtina and Britney Spears. They were both with Madonna on stage for a show. they said they were concurrence since childhood and maybe also because of Justin Timberlake.
Xtina and Kelly Osbourn. They had a cat fight in the MTV awards just like that on stage.

Avril Lavigne同Hilary Duff:
佢地冇合作過,但就傳過不和

因為有個Hilary Duff的fans穿既衣着好似Avril既衣着...