Rihanna rushed off stage during her concert in Australia while she was performing Umbrella with Chris Brown. Some wonder why she might have been feeling woozy but I think it's not that hard to figure out.
Rihanna has a tendency of wearing very tight fitting S&M clothing that inevitably constrict her ability to breathe. Add some singing to that and you can bet that she'll be keeling over in pain in no time. And that's what happened.
Rihanna needs to stop to wearing girdles and start focusing on staying fit in some other way. It's obvious that all those tight outfits are starting to take their toll on Rihanna's body.