Katy Perry celebrated her bachelorette party this weekend at the Hard Rock in Vegas.
Close pal Rihanna and Katy's 25 closest friend hit the city of sin for a weekend full of fun and craziness. The large group, checked into Casino Tower and started festivities in a private cabana at HRH Beach Club.
The girls who were decked out in beach attire and the typical risque bachelorette-themed items, ordered many drinks and food and were in lively spirits.
Before the party began, Perry Tweeted: "Signing up for a liver transplant now."
Later, the party continued at AGO, where Katy, Rihanna and the rest of the group enjoyed good food and company, getting up and taking photos throughout the meal.
Finally, the group took the party to their suite in Casino Tower, where an erotic cake was delivered to Katy.
The weekend got off to a rough start when Katy's fiance was placed under citizen's arrest after he allegedly hit a photog at the airport.