In hospital: Rihanna tweeted this picture from her sick bed after the Met Gala.
She was suffering from 'exhaustion and dehydration', according to MediaTakeOut.
However, after a brief stay in the undisclosed medical center, she was discharged and allowed to fly back to her home in Los Angeles, arriving in California earlier this morning.
It comes just days after the 24-year-old singer pulled out of a Saturday Night Live rehearsal due to her tiredness.
The star has certainly been burning the candle at both ends in recent months and the new issue of America's Star magazine claims she is 'spiraling out of control'.
'Rihanna loves to party but this past month she's gotten really out of control,' an insider tells the publication.


Another night out: The singer is understood to have been taken to the ER after partying at the Met Gala on Monday night
 'She's been drinking almost everyday and talking about smoking weed a lot too.'
Her wild nights out have included a late visit to a strip club in Queens, New York, on May 2 where she was seen throwing money at female performers.
'Everyone is telling her to slow down and think about therapy, or even rehab,' the source continues.
But Rihanna has always been proud of her Good Girl Gone Bad reputation.
She has said: 'I'm crazy and I don't pretend to be anything else.

Good Girl Gone Bad: The singer has had a string of wild nights out, including this visit to a New York strip club on May 2