PHOTOS: Some of the best costumes from West Hollywood Halloween

WEST HOLLYWOOD (CNS) - As many as a half-million people were expected to descend on West Hollywood Saturday night for the annual Halloween Carnaval, billed as the world's largest Halloween party -- which this year paid special tribute to the 40th anniversary of "The Rocky Horror Picture Show.''

The film's star, Tim Curry, was named the city's honorary mayor at a ceremony in the midst of the party.

The Carnaval, scheduled for 6 to 11 p.m. but lasted much longer, took place along Santa Monica Boulevard between Doheny Drive and La Cienega Boulevard.

Many dressed in extremely creative and often-outrageous costumes. Warning, one of the photos in this story is NSFW.

THIS GUY WINS HALLOWEEN 󾍘🏼 (His name is Jeff Scott, and it took him eight months to make this dino out of jugs and water bottles)

The Carnaval began in 1987 and has grown annually, evolving into a Southland and national phenomenon.

Amid the sea of humanity, the Carnaval also offered seven entertainment areas featuring bands, DJs, dancers, artists and painters. Headlining the musical performances was former Culture Club lead singer Boy George on the San Vicente Stage at the intersection of Santa Monica and San Vicente boulevards.

Carnaval-goers are urged to show off their costumes by posting pictures online with #wehohalloween.