The illusion of Kate Moss is an art piece first shown at the conclusion of the Alexander McQueen runway show The Widows of Culloden (Autumn/Winter 2006). It consists of a short film of English model Kate Moss dancing slowly while wearing a long, billowing gown of white chiffon, projected life-size within a glass pyramid in the centre of the show's catwalk. Although sometimes referred to as a hologram, the illusion was made using a 19th-century theatre technique called Pepper's ghost.
McQueen conceived the illusion as a gesture of support for Moss; she was a close friend of his and was embroiled in a drug-related scandal at the time of the Widows show. It is regarded by many critics as the highlight of the Widows runway show, and it has been the subject of a great deal of academic analysis, particularly as a wedding dress and as a memento mori. The illusion appeared in both versions of Alexander McQueen: Savage Beauty, a retrospective exhibition of McQueen's designs.