Kim Kardashian banned Rihanna from Kanye West's dressing room during his recent London concerts.
The reality TV starlet doesn't want her 34-year-old boyfriend hanging out with other women on his own and with Rihanna's flirtatious reputation, she wasn't taking any chances when she wasn't at The O2 arena for his Watch the Throne tour shows with Jay-Z.
Kim is believed to have not been a fan of the You Da One singer since she was romantically linked to her brother Rob Kardashian several months ago.
A source told The Sun newspaper: "Kim doesn't want women near him unless she is there - even friends. The fact Rihanna was linked to Rob probably didn't help."
However, it's not just Rihanna that Kim, 31, is jealous of. She is also said to have ordered him to leave a party in London last week after he spent too much time with other revellers instead of her.
A source said: "Kim was all over Kanye at the start, but when he started to mix with other people she had a stern word and took him away from the party.
"He followed her orders with minimum fuss. He knows the deal."