Original: Piper also stars as Hannah Baxter/Belle de Jour in Secret Diary of a Call Girl , an ITV2 adaptation of Belle de Jour 's The Intimate Adventures of a London Call Girl , a memoir detailing the life of a high-class prostitute .
Simplified: Piper also appears in Secret Diary of a Call Girl , an ITV2 versian of Belle de Jour 's The Intimate Adventures of a London Call Girl , a memoir detailing the life of a high-class prostitute .