Beyonce Knowles tells Jay-Z: We can't save Rihanna
Bey's warned her hubby that Ri-Ri's behaviour is spiralling out of control with no end in sight.
It comes after one of Rihanna's wildest weeks, which saw her vomiting in a club, sending good luck messages to abusive ex Chris Brown and Tweeting a picture of herself with a female stripper.
A source close to Beyoncé, 31, says: 'She's told Jay that Ri-Ri's beyond hope and just isn't their problem.
'This drama has been going on for so long and people get hurt because she won't grow up.
'Bey wants Jay to keeps his distance.'
Rihanna, 24, has taken her behaviour to a new level.
On 20 September she Tweeted a picture of herself with a stripper between her legs.
The next night she arrived late on stage at Las Vegas's iHeart Radio festival, performing for just 30 minutes before heading to the 1Oak nightclub, where clubbers saw her 'vomiting into a napkin'.
A source says she then went to a strip club and partied 'til sunrise.
The source adds: 'She's been at Spearmint Rhino strip club every night, visiting private booths to get hot and heavy with girls.'
Ri-Ri then provoked more controversy by Tweeting her ex Chris, 23 - who assaulted her in 2009 - to wish him good luck at a court appearance, after he was caught with marijuana whilst still on probation for his attack on her.
She's even vowed to back him when he appears in court next month for another probation hearing.
Read more about Rihanna in Now magazine dated 8 October 2012 - out now!