Showbiz
Rex Features
Hilton reportedly wants to follow in her friend's footsteps by having a baby after hooking up with the brother of Richie's fiancé Joel Madden.
Joel and Benji Madden are members of rock band Good Charlotte, whom Hilton is currently accompanying on tour.
A source told Star: "Nicole was already upset when Paris started dating Benji - it all happened too fast for her liking. Then Nicole couldn't go on tour with them because she had to stay home and look after her young daughter Harlow.
"She is furious Paris is out there gallivanting with her boyfriend and his brother. If Paris gets pregnant, Nicole is going to go ballistic. She thinks Paris copies everything she does."
Richie gave birth to her first child with Joel in LA on January 11.
> Richie to launch maternity clothes line
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