Rihanna hospitalized? Singer forced to cancel show

The flu doesn't care if you're the hottest pop star around. It will still take you down. On Halloween, even!

On Monday, Rihanna was forced to cancel her show in Malmo, Sweden, after a trip to the hospital confirmed that she'd caught the flu.

"I am sorry to everyone who was coming out to my show in Malmo, Sweden," she says in a statement. "I was so excited to perform for you all. It would have been a great time ... so much better than being sick with the flu, ugh! I'm really disappointed I couldn't be there."

She tweeted a photo of herself hooked up to an IV drip, but her reps confirmed that she's no longer in the hospital, and she'll be back on stage tomorrow night in Stockholm to continue the Loud Tour.