Rihanna throws hen do for Katy Perry

Rihanna treats Katy Perry to Cirque du Soleil hen do

The Te Amo singer was in charge of organising Katy Perry 's hen do and she did so with a trip to Las Vegas to watch Cirque du Soleil.

Rihanna had joked in the past that she needed to organise something spectacular to match Katy Perry and Russell Brand 's upcoming wedding in India, so Sin City seemed like the right choice.

Despite Brand having been arrested for an altercation with a photographer the same day as the hen do, Perry seemed in a good mood and up for a night of fun.

She later took to her Twitter and wrote: "Signing up for a liver transplant now..." in reference to the amount of alcohol consumed on her hen do.

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