Shop › Hollow Knight Poster Hollow Knight Poster $16.00 The Silksong is real! This is my fanart of Hollow Knight, one of my favorite games to replay.This is a 9 by 12 inch poster. The Silksong is real! This is my fanart of Hollow Knight, one of my favorite games to replay.This is a 9 by 12 inch poster. Quantity: Add To Cart Added!