Katy Perry Gets Her ‘Boo!’ On

Matt Donnelly | October 29, 2008 - 5:29 pm

With her strict Christian upbringing, should Katy Perry be so big on celebrating Halloween?

Well, the spooky holiday coincides with Katy’s birthday (she turned 24 on October 25); so the singer threw a massive Halloween/birthday bash at Siren Studios in Los Angeles Tuesday night, reports E! Online.

Setting the tone for the event, so-gay Katy arrived at the festivities in a hearse, rocking a 10karat ruby and diamond necklace by jeweler Pascal Mouawad.

More than 200 costumed guests—including Josh Groban and Cisco Adler—packed into the Malibu Rum-sponsored event to creep each other out with their costumes.

Aside from guzzling rum concoctions, partygoers bobbed for body parts and made merry in a coffin photo booth and an execution chamber.

Guests were asked to dress as their favorite dead celebrity. Adorned with a bushy mustache, Katy resurrected deceased Queen frontman Freddie Mercury.

Good luck getting any girls to kiss you with that bristle-brush strapped under your nose.