You witnessed her fashion metamorphosis and now it's time to focus on Rihanna's celebrity style. You all voted Rachel Bilson, but 2009 has been Rihanna's most fashionable year. She's rocked out every red carpet, every sidewalk, every party. No matter how busy she is — and she's had a busy year — she always finds time to look damn good. What's more, she's not afraid to experiment, making it super fun to follow her. She had a chaotic start but she's ending 2009 with a huge bang.