Lady Gaga, Kim Kardashian, Chris Brown And More Wear The Most Controversial And Sexiest Celebrity Halloween Costumes Of 2012 [PHOTOS]

Many of our favorite celebrities dressed up for Halloween this year, mimicing their favorite action heroes and even fellow famous people they admire.

The costumes ranged from sexy (Kim Kardashian) to just plain scary (Dwayne Johnson.)

Chris Brown, who is not one that is new to controversy, thought it would be a good idea for him and his friends to dress as terrorists with military guns for Halloween.

Along with the picture he posted on his Twitter account, he had the caption, “Ain’t nobody [expletive] with my clique!!!!” a reference to a single Kanye West has which is titled, “Clique.”

More than 3,000 of Brown’s followers retweeted the picture.

Chris Brown is not the only one with a Halloween costume such to spark comments. Jessica Simpson showed off her amazing weight loss since giving birth to her daughter, Maxwell, five months ago. She wore a tight black bustier that showed off her slim waist and ample cleavage.

Simpson has famously been struggling to lose the 40 to 50 pounds she gained in pregnancy, especially since Weight Watchers offered her a rumored $4 million deal to lose the weight by a certain date. 

Pro wrestler and actor Dwayne Johnson, on the other hand, opted for a scary look, taking on the Hulk. Along with the photo of his bulging muscles covered in green paint, he wrote, “Don’t make me angry. You wouldn’t like me when I’mangry” -- The People’s Hulk #HappyHalloween.”

Check out the costumes of some of your other favorite celebrities in the slideshow above.