The sidewalks of Manhattan are no stranger to weirdos, but on Halloween, the city gets really spooky!

TMZ caught costumed New Yorkers trick or treating on Wednesday, dressed as everything from paparazzi to gladiators to Shrek -- and even a "Sister Act" Whoopi Goldberg. Even Alice from "The Brady Bunch" makes an appearance.

But where are all the VMA Britneys?!