This week's best-selling paperbacks supplied by Waterstones.

1 The No 1 Ladies' Detective Agency by Alexander McCall Smith

2 Life of Pi by Yann Martel

3 The Lovely Bones by Alice Sebold

4 Northern Lights: His Dark Materials by Philip Pullman

5 Vernon God Little by DBC Pierre

6 Morality For Beautiful Girls by Alexander McCall Smith

7 What Not To Wear by Susannah Constantine and Trinny Woodall

8 Mr Christmas by Roger Hargreaves

9 Birdsong by Sebastian Faulks

10 The Subtle Knife: His Dark Materials by Philip Pullman