Rihanna Parties at Katy Perry's Bachelorette Bash

Rihanna Parties at Katy Perry's Bachelorette BashRihanna orchestrated a crazy bachelorette party for Katy Perry this past weekend, which included 25 of their closest friends joining in on the festivities.The party, which allegedly took a long time to plan, entailed the two going to KA by Cirque du Soleilin a stretch Hummer convertible, and eventually to the MGM Grand where they took pictures with