Rihanna and Katy Perry Bikini Bachelorette Pool Party [PHOTOS]

Rihanna and Katy Perry are BFF's so it makes sense that the Rude Boy singer is in charge of Katy Perry's Bachelorette party. After the circus, Katy Perry and Rihanna slipped into sexy bikini's and swimsuits, called some friends, ordered some drinks and lounged by the pool at the Hard Rock Hotel & Casino on Saturday (September 18) in Las Vegas.

We are told Rihanna stuck to her rude girl ways when ordering the cake. The cake read CuntGratulations. The group later stopped by a strip club and tipped some mens. We added the extra s for savings, spectacles. Good for you Katy Perry party the night away.