(EXCLUSIVE, Premium Rates Apply) VALENCIA, CA - AUGUST 31: ***EXCLUSIVE COVERAGE*** Singer Rihanna enjoys the Tatsu rollercoaster on a visit to Six Flags Magic Mountain on August 31, 2009 in Valencia, California. (Photo by Mathew Imaging/WireImage)
(EXCLUSIVE, Premium Rates Apply) VALENCIA, CA - AUGUST 31: ***EXCLUSIVE COVERAGE*** Singer Rihanna enjoys the Tatsu rollercoaster on a visit to Six Flags Magic Mountain on August 31, 2009 in Valencia, California. (Photo by Mathew Imaging/WireImage)