Jay-Z has had enough of Rihanna's partying ways. The rap icon reportedly lost it last month when the singer got so drunk that she missed a flight out of the UK to meet a work obligation—and then bragged about her wild night on Twitter. Jay-Z told RiRi that she'd be dropped from his label if she didn't go to rehab. “U know life is great when u wake up at 9 am DRUNK!!!!! #London,” she tweeted, the day of the missed flight. “You know it was a good night when u wake up n run to your BFF's room like... How did I get in my bed? Did I walk? Stumble? Get carried?" Rihanna also tweeted that Jay-Z had given her the day off to recover—but some sources are saying she needs about 30 of them. And for the sake of her career, it looks like Rihanna will begrudgingly enter treatment. "She's not happy, but she now feels she has no choice," says one source. "She's reached breaking point. Ri says she's physically and mentally exhausted and feeling lost. I think she desperately needs help and some time off—not just from work but from all the other stresses in her life too." In recent months Rihanna has used Twitter to chronicle the good, bad and downright raunchy sides of her life. She's tweeted photos of herself at strip clubs, and even hooked up to an IV during a hospital visit caused by "exhaustion" after NYC's Met Gala in May.