Celebrity Halloween Costumes 2012: Who and What the Stars Dressed Like [PHOTOS]

See your favorite stars in their outrageous Halloween costumes this year.

People.com released a slideshow of celebrities in their Halloween costumes this year, and celebrities are looking fun and amusing as ever.

Some of the favorites include P.Diddy in a Jimi Hendrix costume, attracting all the purple haze and rock and roll vibe. Jessica Alba, together with husband Cash Warren and daughter, Honor, appeared as The Incredibles in red tights and matching hair-dos.

Kim Kardashian transformed into a mermaid, with platinum blonde hair that costs a whopping $2,000 to have. It's safe to say that Kim nabs the most expensive costume this year, and that's only for her hair. Hilary Duff came out as a day of the dead muerta, and even tweeted about her make-up.

"Yaaaaa! Day of the dead crazy" said Duff in her Twitter account.

Glee's Darren Criss sported a Boy Scout look inspired by Moonrise Kingdom character, Sam Shakusky. The couples also showed some interesting choices for their costumes. Ryan Seacrest and Julliane Hough appeared as Bonnie and Clyde, while Fergie and Josh Duhamel appeared as Angelyne and Dennis Woodruff, two famous Hollywood street icons.

Queen of Halloween, Heidi Klum, dressed as the queen of Nile, Cleopatra. She had three thoughts in mind when dressing like the famous historical icon: big, golden, and fierce.

View the slideshow to see photos of these celebrities and more. Happy Halloween!