Rihanna Hospitalized After Met Gala

Rihanna was rushed to the hospital Monday following the "Schiaparelli And Prada: Impossible Conversations" Costume Institute Gala, but clearly she didn't think it was cause for concern because she was well enough to tweet a photo of her arm hooked up to an IV drip. It was reported that the Barbados-born beauty has actually been suffering from the flu since last week, which is also the reason why she missed her SNL rehearsal.

Rumors have been swirling that the pop star's friends have been urging her to enter rehab, though!

"Rihanna loves to party but this past month she's gotten really out of control. She's been drinking almost every day and talking about smoking weed a lot too," a source told Star magazine.

It's pretty well known that Katy Perry's bestie loves to let loose, but apparently there's a darker issue behind her wild behavior -- heartbreak over ex-boyfriend Chris Brown!

Get over him, girl, he's a rude boy! Your health is much more important!