The heiress and the boyfriend, Paris Hilton and River Viiperi, decided to become superheroes for one night to attend Rihanna’s Halloween bash held at the Greystones Manor in West Hollywood, California on Wednesday (October 31).

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There is no doubt Batman was Robin’s sidekick for the night. Paris looked incredibly sexy as a skanktastic Robin, while River (as Bat. Man) was simply an accessory to the socialite’s insatiable need for attention.

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Paris Hilton & River Viiperi As Batman & Robin For Halloween

[image: Michael Wright/wenn.com]