Singer Rihanna Concert Costume Draws Flak

London: Singer Rihanna`s recent performance at a concert has been panned by critics for her costume. The singer wore an outfit that was half-bikini, half-catsuit Saturday night when she performed at the Superbowl Fan Jam concert, reports a news website. Rihanna was joined by Timbaland and Young Jeezy at the bash, held ahead of Miami hosting the Super Bowl American football championship match Sunday.