How news happens today: Rihanna tweeted a picture of her arm hooked up to an IV, with the caption "Sorry Malmo!" The context is that she's in the hospital and had to cancel the concert there. For what, we don't know, probably because Rihanna has more pressing things to do like the following: rest, recover, stay the hell away from the press cycle. Whatever it was, it's serious enough for various sites to call it being "rushed to the hospital," even. Should go without saying that we wish her a swift recovery.