Secret Diary of a Call Girl -LRB- known on-air before the watershed in the UK as Secret Diary -RRB- is a British television drama broadcast on ITV2 based on the blog and books by the pseudonymous '' Belle de Jour , '' starring Billie Piper as Belle , a high-class London-based call girl .
The eponymous call girl is based on the blogs of Belle de Jour .
The eponymous call girl is based on the blogs of Belle de Jour .
Simplify this text: Secret Diary of a Call Girl -LRB- known on-air before the watershed in the UK as Secret Diary -RRB- is a British television drama broadcast on ITV2 based on the blog and books by the pseudonymous '' Belle de Jour , '' starring Billie Piper as Belle , a high-class London-based call girl . Output: