Kim Kardashian jealous of Kanye West's relationship with a 17-year-old singer

Kim Kardashian is reportedly 'agitated' by Kanye West's

 relationship with a 17-year-old singer.

The Yeezus star has been producing songs for his protege

 Pia Mia under his GOODMUSIC production company for

 the last few months.

But according to Radar Online, their close relationship and

 the fact that Pia has become one of Kanye's trusted 

advisors has left Kim feeling jealous.

'Kanye thinks [Pia's] young, fresh and hip - totally his target 

audience,' the insider told the website. 'He's been consulting

 her on a lot of his creative projects, including the Kanye x 

APC collection. Kanye's creative team was pretty shocked 

that he would use a teenager as his confidante. And Kim 

was actually kind of agitated by it, because he doesn't usually

 want her input on design stuff.

 She was a little jealous.'

Kanye, 36, got engaged to reality star Kim in October last year

 and the couple are currently

 planning their wedding in Paris this May.

They also have a daughter together, nine-month-old North West.

But despite saying his relationship with Pia is completely

 professional, his team find the situation with the singer 'weird'.

'He believes she could be the next Rihanna. Kanye has made it clear to everyone that their

 relationship is strictly creative,' the source continued, before recalling a phone call between the

 pair while in LA earlier this month. 'Kanye called her and the conversation sounded kind of flirty

 and romantic. It could be that they are just good friends but it was definitely more than just a 

professional call.'

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