A ballet dancer stretches backstage during Nacho Duato's “The Nutcracker” at the Mikhailovsky Theatre in St. Petersburg, Russia November 21, 2015. For theatregoers in St Petersburg, Nacho Duato's “The Nutcracker” demonstrates the global appeal of a Christmas classic. When the curtain rises at the Mikhailovsky Theatre, among the oldest opera and ballet houses in Russia, it's the culmination of hundreds of hours of toil and sweat by dancers, costume makers, set designers and musicians playing the famous score by Pyotr Tchaikovsky. (Photo by Grigory Dukor/Reuters)

Actresses Vonnie Lui (R) and Yukiku Suou (L) attend the “3D s*x And Zen: Extreme Ecstacy” photocall at the Majestic Beach Pier during the 64th Cannes Film Festival on May 14, 2011 in Cannes, France. (Photo by Michael Buckner/Getty Images)

José Pereira de Souza plays an accordion as actress and model Tatiana Melo gives a television interview in Feira Nordestina outside of the Olympic periphery on Wednesday, August 17, 2016. (Photo by Aaron Ontiveroz/The Denver Post)

A s*x worker (C) stages a performance to denounce what they say is abuse and social stigma against them in Madrid, Spain, October 14, 2015. Placard reads "Prostitutes are the ones that make the streets dirty". (Photo by Andrea Comas/Reuters)

Chen interacts with his “smart” sеx doll as he lays in a bed in his home in Guangzhou, Guandong Province, China, 05 April 2018. Chen, because of his busy pharmaceutical sales job and the travel it involves, has no time for a girlfriend. Chinese girls all want to talk about marriage after the second date and he is not interested in that for now, he said. (Photo by Aleksandar Plavevski/EPA/EFE)

A worker assembles a sеx doll at the WMDOLL factory in Zhongshan, Guangdong Province, China, July 11, 2018. The factory has over 200 full-time workers, all dolls are handmade and each requires the cooperation of at least five workers. (Photo by Aly Song/Reuters)

“Jessica”, a silicon sеx doll for sexual encounters lies on a bed at the “Bordoll” brothel on April 17, 2019 in Dortmund, Germany. Bordoll is Germany's first brothel to specialize in sеx dolls. It currently offers 13 female dolls and one male doll and will soon be expanding its female line-up. Schwarz says “sеx dolls are so popular because the client can do what he wants to and nobody complains”. (Photo by Lukas Schulze/Bongarts/Getty Images)