Rihanna hosted a bachelorette party for Katy Perry over the weekend in Las Vegas.
The group stayed at the Hard Rock Hotel and enjoyed an afternoon of tanning at the pool followed by dinner at Ago restaurant. They also took in a showing of Ka by Cirque du Soleil and danced at XS nightclub at the Wynn until 3am.
Katy wore a bride-to-be hat and and they were chauffeured around in a convertible Hummer.
Perry is rumored to be tying the knot with Russell Brand in India next month.