RIHANNA is 23 and already a five-album veteran. They use them up fast in the music business these days but, judging by the full house on Friday night at the Brisbane Entertainment Centre for the opening of the Barbados-born pop star's Australian tour, this is one career that won't be fading fast. Read more... She launched the show with the throbbing, electro-pop of Only Girl In The World and proceeded to deliver a show packed with all the whiz-bang effects expected of a modern arena performance. In fact, audiences are so used to these now that they are becoming difficult to impress, but Rihanna kept the effects coming in an effort to do just that. She was joined by five dancers for Hard, backed by war-like imagery on the big screens. Mid-song, she mounted what must be the world's only pink army tank. If you know anything about her more sexually charged lyrics, you can probably guess which part of it she straddled.