On the cover of a February 2005 People Magazine, it was "Simon vs." her, "it's getting nasty!"
Jon Stewart traded some heated words wtih this bow-tied TV host when he appeared on "Crossfire" in 2004
A famous Hollywood feud was between Bette Davis and this "What Ever Happened to Baby Jane" co-star
About her falling out with her "Simple Life" co-star, all she would say is that "Nicole knows what she did"
In 2004 Elton John caused a stir, accusing this single-named singer of lipsyncing during "live" concerts