Hologram clothes

A hologram projector projected hologram clothes on people's visual cortex, allowing them to see others who were naked as if they were wearing clothes. (TV: The Time of the Doctor)

Information from in-valid sources
The Eleventh Doctor used hologram clothes to cover himself after stripping down to sell his clothes for Children in Need, though interference from the public's television remote controls caused them to start disappearing. (NOTVALID: The Naked Truth)