May 5th, 2009 | 1:19 pm Style Wars: Rihanna Vs. Lake Bell by Kate Spencer Rihanna reemerged on the red carpet last night, making her first appearance at the Costume Institute Gala since Chris Brown was arrested in February. The singer made a fierce impression in menswear, as did actress Lake Bell. Tell us: which lady-tux do you dig more? [Photos: GettyImages]