Halloween Costumes 2012: Chris Brown, Rihanna, Drake, Kanye, Lady Gaga, Diddy, Alicia Keys, J.Lo, Usher, Wiz Khalifa

Chris Brown pulled out the big guns—literally—for his Halloween costume. Breezy and his boys dressed as Middle Eastern militants, complete with facial hair, turbans, and weapons.

“Ain’t nobody Fucking wit my clique!!!!” tweeted Chris, who sported a long beard, white robe, and ammo belt across his chest.

The controversial costume was not well received by everyone. “Really?! Not cool at all,” wrote one of his Instagram followers, while others saw humor in it. “Haha! Thats funny as phuck!!”

Pop princesses Rihanna and Lady Gaga rocked similar costumes, both showing their love for Mary Jane in their green getups. Gaga’s was a bit more scandalous, with marijuana leaf pasties covering her nipples. Meanwhile, RiRi wore a green veil while hosting her costume ball in West Hollywood.

Some of our favorites included Drake as Borat, Diddy as Admiral General Aladeen from The Dictator, and Wiz Khalifa as (surprise) a joint.

In the couples department, Kanye West and girlfriend Kim Kardashian joined forces as Batman and Catwoman, Alicia Keys wielded her power as a Black Panther, while her hubby Swizz Beatz was a boxer. Jennifer Lopez and her beau Casper Smart spread peace and love in their hippie-dippy threads.

Check out over 20 photos of your favorite stars celebrating Halloween.