It is costume season and stars made sure to give it their best while they attend various Halloween parties in Los Angeles and New York. Here are some stars who maxed out their creativity so they can stand out as their alter egos.

Socialite, Paris Hilton dressed up as the "twerking" Miley Cyrus for the infamous Playboy Halloween bash on October 28. 'Gravity' actress, Sandra Bullock appeared as a "Day of the Dead" muerta with her son, Louis in one trick or treating event for kids on October 19. For Kate Hudson's annual Halloween party bash on October 26, sexy couple Fergie and Josh Duhamel looked absolutely unrecognizable in their costumes. Fergie dressed as Morticia Addams from "The Addams Family," while actor, Josh, showed up as Riff Raff from "The Rocky Horror Picture Show."

Talk show host, Chelsea Handler, also showed up in Kate Hudson's star-studded party as a convincing pregnant woman. Glee star, Naya Rivera, looked absolutely sexy in her Carmen Sandiego costume for Kate Hudson's said party. She wore a latex suit paired with knee-high boots and a hat to complete the look. Socialite, Nicole Richie, decided to be a glamorous cat for a Cadillac party on October 24 wearing a sparkling ensemble paired with lace cat ears.

Modern Family's Jesse Tyler Ferguson disguised as a coat-wearing batman for a Halloween party in Hollywood on October 26. His partner and husband, Justin Mikita, appropriately appeared as Robin for the party. Jersey Shore star, Snooki Polizzi dressed as The Wizard of Oz's Dorothy in a short blue and white plaid dress, while her fiancé, Jionni Lavalle dressed as a scarecrow with their bundle of joy as The Cowardly Lion.

Lauren Conrad continues to live the fairy tale life by dressing as a fairy for a costume bash on October 26. The reality star donned a layered, sheer number with matching wings for the whimsical effect. Martha Stewart also came out as a fairy, a fairy godmother, in fact, for Hub Network's Halloween bash last October 20. 

See the slideshow of stars in their wacky costumes here.