A man dressed as Gene Simmons from the rock group KISS poses at the West Hollywood Halloween Costume Carnaval, which attracts nearly 500,000 people annually in West Hollywood, California October 31, 2015. (Photo by Jonathan Alcorn/Reuters)





A woman dressed in a Barbie costume poses at the West Hollywood Halloween Costume Carnaval, which attracts nearly 500,000 people annually, in West Hollywood, California October 31, 2015. (Photo by Jonathan Alcorn/Reuters)





Jennifer Roberts (left) and Damien Otis (right) pose at the West Hollywood Halloween Costume Carnaval, which attracts nearly 500,000 people annually in West Hollywood, California October 31, 2015. (Photo by Jonathan Alcorn/Reuters)





A man dressed as a zombie participates in the West Hollywood Halloween Costume Carnaval, which attracts nearly 500,000 people annually, in West Hollywood, California October 31, 2015. (Photo by Jonathan Alcorn/Reuters)





Robi Collins dressed as Donald Trump and Naomi Leonard pose at the West Hollywood Halloween Costume Carnaval, which attracts nearly 500,000 people annually, in West Hollywood, California October 31, 2015. (Photo by Jonathan Alcorn/Reuters)





Joel Balcita shows his homemade Tinder App costume at the West Hollywood Halloween Costume Carnaval, which attracts nearly 500,000 people annually, in West Hollywood, California October 31, 2015. (Photo by Jonathan Alcorn/Reuters)





A family dressed as Star Wars characters walk along Santa Monica Boulevard at the West Hollywood Halloween Costume Carnaval, which attracts nearly 500,000 people annually, in West Hollywood, California October 31, 2015. (Photo by Jonathan Alcorn/Reuters)





Adriana Hernandez poses in her Dia de los Muertos costume at the West Hollywood Halloween Costume Carnaval, which attracts nearly 500,000 people annually, in West Hollywood, California October 31, 2015. (Photo by Jonathan Alcorn/Reuters)





People sit on a bench at the West Hollywood Halloween Costume Carnaval, which attracts nearly 500,000 people annually, in West Hollywood, California October 31, 2015. (Photo by Jonathan Alcorn/Reuters)





A person dressed in a dinosaur suit poses at the West Hollywood Halloween Costume Carnaval, which attracts nearly 500,000 people annually in West Hollywood, California October 31, 2015. (Photo by Jonathan Alcorn/Reuters)





A person wearing a large mask is silhouetted against a screen at the West Hollywood Halloween Costume Carnaval, which attracts nearly 500,000 people annually, in West Hollywood, California October 31, 2015. (Photo by Jonathan Alcorn/Reuters)





A man wearing a costume participates in the West Hollywood Halloween Costume Carnaval, which attracts nearly 500,000 people annually, in West Hollywood, California October 31, 2015. (Photo by Jonathan Alcorn/Reuters)





David Gekchyan is pictured dressed in costume portraying Walter Palmer, the dentist who shot and killed Cecil the lion, at the West Hollywood Halloween Costume Carnaval, which attracts nearly 500,000 people annually, in West Hollywood, California October 31, 2015. (Photo by Jonathan Alcorn/Reuters)





A group of men dressed as Star Wars character Princess Leia pose at the West Hollywood Halloween Costume Carnaval, which attracts nearly 500,000 people annually, in West Hollywood, California October 31, 2015. (Photo by Jonathan Alcorn/Reuters)





A man dressed as Twisty from the American Horror Story television show poses at the West Hollywood Halloween Costume Carnaval, which attracts nearly 500,000 people annually, in West Hollywood, California October 31, 2015. (Photo by Jonathan Alcorn/Reuters)





Women in costumes are pictured at the West Hollywood Halloween Costume Carnaval, which attracts nearly 500,000 people annually in West Hollywood, California October 31, 2015. (Photo by Jonathan Alcorn/Reuters)





A group of people in costume walk together at the West Hollywood Halloween Costume Carnaval, which attracts nearly 500,000 people annually, in West Hollywood, California October 31, 2015. (Photo by Jonathan Alcorn/Reuters)





A woman dressed as a gypsy looks at her phone while waiting for a subway at Times Square station in the Manhattan borough of New York October 31, 2015. (Photo by Carlo Allegri/Reuters)





A reveler dressed up for Halloween walks through Times Square in the Manhattan borough of New York October 31, 2015. (Photo by Carlo Allegri/Reuters)





A person dressed as a zombie stands at the 14th Street subway station in the Manhattan borough of New York October 31, 2015. (Photo by Carlo Allegri/Reuters)





A man dressed up as Pinhead from the Hellraiser series poses for a photo as his subway train pulls away at Times Square station in the Manhattan borough of New York, October 31, 2015. (Photo by Carlo Allegri/Reuters)





A person dressed as Cecil the Lion walks though the 14th Street subway station in the Manhattan borough of New York, October 31, 2015. (Photo by Carlo Allegri/Reuters)





A couple dressed up as musical act Daft Punk ride the shuttle subway at Times Square station in the Manhattan borough of New York, October 31, 2015. (Photo by Carlo Allegri/Reuters)





A reveler takes part in the Greenwich Village Halloween Parade in the Manhattan borough of New York, October 31, 2015. (Photo by Carlo Allegri/Reuters)





A reveler takes part in the Greenwich Village Halloween Parade in the Manhattan borough of New York October 31, 2015. (Photo by Carlo Allegri/Reuters)





A man dressed as Superman walks out of portable bathroom before the Greenwich Village Halloween Parade in the Manhattan borough of New York, October 31, 2015. (Photo by Carlo Allegri/Reuters)





A reveler takes part in the Greenwich Village Halloween Parade in the Manhattan borough of New York, October 31, 2015. (Photo by Carlo Allegri/Reuters)





A man dressed as Batman waits in line to make a purchase at a bodega during the Greenwich Village Halloween Parade in the Manhattan borough of New York October 31, 2015. (Photo by Carlo Allegri/Reuters)





Revelers dressed as characters from Star Wars have a lightsaber battle as they take part in the Greenwich Village Halloween Parade in the Manhattan borough of New York, October 31, 2015. (Photo by Carlo Allegri/Reuters)





A man dressed as a monster with a cowboy hat makes a purchase at a bodega during the Greenwich Village Halloween Parade in the Manhattan borough of New York, October 31, 2015. (Photo by Carlo Allegri/Reuters)





A man in a pink bunny suit walks though Grand Central Terminal on Halloween in the Manhattan borough of New York, November 1, 2015. (Photo by Carlo Allegri/Reuters)





Justin Gray from Cleveland, who is dressed as Jesus, poses for photos in Times Square on Halloween in the Manhattan borough of New York October 31, 2015. (Photo by Carlo Allegri/Reuters)





Revelers dressed as a doctor and a nun (R) sit at a table in Times Square on Halloween in the Manhattan borough of New York October 31, 2015. (Photo by Carlo Allegri/Reuters)





Dressed as Jesus, Justin Gray from Cleveland, walks though Times Square on Halloween in the Manhattan borough of New York October 31, 2015. (Photo by Carlo Allegri/Reuters)





A man in costume rides the shuttle subway from Times Square to Grand Central Terminal in the Manhattan borough of New York November 1, 2015. (Photo by Carlo Allegri/Reuters)





A man dressed as the Swedish Chef from the Muppets poses for photos as he walks though Grand Central Terminal on Halloween in the Manhattan borough of New York November 1, 2015. (Photo by Carlo Allegri/Reuters)





A man rides a tiny bicycle though Times Square on Halloween in the Manhattan borough of New York October 31, 2015. (Photo by Carlo Allegri/Reuters)





A couple dressed as The Joker from Batman ride the shuttle subway from Times Square to Grand Central Terminal in the Manhattan borough of New York November 1, 2015. (Photo by Carlo Allegri/Reuters)





A couple dressed up for halloween walk through Times Square before the 42nd Annual Halloween Parade October 31, 2015 in New York City. (Photo by Kena Betancur/Getty Images)





Angele Blank, right, and Virginia Promeyrat wait for the start of the Greenwich Village Halloween Parade, Saturday October 31, 2015, in New York. (Photo by Tina Fineberg/AP Photo)





Revelers take part in the Greenwich Village Halloween Parade in the Manhattan borough of New York, October 31, 2015. (Photo by Carlo Allegri/Reuters)





A couple dressed up as musical act Daft Punk ride the shuttle subway at Times Square station in the Manhattan borough of New York October 31, 2015. (Photo by Carlo Allegri/Reuters)