POPSUGAR Celebrity Bikini Pictures of Katy and Rihanna by Celebrity 9/20/10 0 Shares Like us on Facebook Sign up for our daily newsletter > Previous Photo 1 of 11 View on One Page ADVERTISEMENT ( more slides) Next Share This Link Copy 1 Pictures of Katy and Rihanna Previous Photo 1 of 11 View on One Page ADVERTISEMENT ( more slides) Next Read More Katy PerryRihannaBikini Katy Perry Katy Perry Steps Out in NYC During Taylor Swift's Big VMAs Weekend Look Back at All of Last Year's Memorable Celebrity Halloween Costumes! The 36 Best Celebrity Halloween Costumes, Ever Stars Love Disneyland as Much as You Do! Bikini Julianne Hough Cruises Through LA in a Bikini With Her Fiancé, Brooks Laich I Shared My Postbaby Bikini Photo on Facebook, Because F*ck It The 23 Best Bikini Photos That Beyoncé Has Blessed Us With Victoria Justice Bares Her Bikini Body and Shows Beach PDA With Her Boyfriend Rihanna Rihanna's New Haircut Is Sure to Set a Trend For Fall 9 Times Rihanna Showed a Whole Lot of Skin This Summer Kanye West Had the Kardashians and 1 Very Special Guest at His Latest Gig Look Back at All of Last Year's Memorable Celebrity Halloween Costumes! POPSUGAR, the #1 independent media and technology company for women. Where more than 75 million women go for original, inspirational content that feeds their passions and interests. Be in the Know With OurCelebrity and Entertainment Newsletter Personalize A-Listers TV Movies Young Hollywood Sign up with facebook or By signing up, I agree to the Terms and to receive emails from POPSUGAR.