Kim Kardashian reportedly banned Rihanna from spending time alone in Kanye West's dressing room as she doesn't want women around him.

Rihanna recently joined Kanye and Jay-Z on stage during one of their London 'Watch The Throne' tour dates, and despite their friendship, Kim is said to be worried Kanye could be tempted by Rihanna and other women.

"Kim is incredibly protective of Kanye and doesn't want any women near him unless she is there - even his friends," a source told The Sun.

"Rihanna wasn't even allowed to go into his dressing room without Kim being there. The fact she was linked to Kim's brother probably doesn't help. It's crazy but Kim knows the attention Kanye gets when he's on tour - and she doesn't want any competition."

In other dressing room news, Beyonce is said to have invited Kim backstage at her Revel concert over the Memorial Day Weekend, finally meeting her best friend's new girlfriend.

Do you believe Kim is this controlling of Yeezy?

Kim Kardashian supports Kanye West at 'Cruel Summer' premiere...