<P> On July 18, 2016, production crews had arrived in Riverdale, Toronto, with filming beginning at 450 Pape Ave, which is home to a circa 1902 heritage - designated building called Cranfield House, up until August 19, 2016 . It was reported on September 4 that filming had wrapped in Oshawa, which included the haunted house location, as well as on Court and Fisher streets . Principal photography was confirmed to have ended in Toronto on September 21, 2016, with an altered shooting schedule occurring from June 27 to September 21, 2016, and post-production initially beginning on September 14, 2016 . </P> <P> On August 16, 2016, in an interview with Entertainment Weekly, costume designer Janie Bryant spoke of crafting Pennywise's form - fitting suit and the inspirations it drew from--involving a number of eras--among them Medieval, Renaissance, Elizabethan, and Victorian . Bryant explained that the costume incorporates all these otherworldly past lives, highlighting the point that Pennywise is a clown from a different time . In designing Pennywise's costume, Bryant included a Fortuny pleating, which gives the costume an almost crepe - like effect, to which Bryant remarked, "It's a different technique than what the Elizabethans would do . It's more organic, it's more sheer . It has a whimsical, floppy quality to it . It's not a direct translation of a ruff or a whisk, which were two of the collars popular during the Elizabethan period ." </P> <P> Bryant played with multiple eras as a way of reflecting Pennywise's immortality, and added a "doll - like quality to the costume". She further stated, "The pants being short, the high waistline of the jacket, and the fit of the costume is a very important element . It gives the character a child - like quality ." Bryant spoke of the two puffs off the shoulder, sleeves and again on the bloomers, with her desire to create an "organic, gourd or pumpkin kind of effect", which includes the peplum at the waist, and the flared, skirt - like fabric blossoming from below his doublet . She explains, "It helps exaggerate certain parts of the body . The costume is very nipped in the waist and with the peplum and bloomers it has an expansive silhouette ." The main color of his costume is a dusky gray, but with a few splashes of colour . She concludes the interview by stating, "The pompoms are orange, and then with the trim around the cuffs and the ankles, it's basically a ball fringe that's a combination of orange, red, and cinnamon . It's almost like Pennywise fades into his environment . But there are accents to pull out the definition of the gray silk ." </P> <P> Judith, the woman in the portrait whose form It assumes to terrify Stan, did not appear in the novel . Muschietti based this sequence on the paintings of Amedeo Modigliani, one of which hung in his childhood home, and which he found frightening, interpreting Modigliani's stylisation as monstrosity . The eponymous creature in Muschietti's previous film, Mama, was also based on Modigliani's work . </P>

What is stephen king's it based off of