I'm not really convinced on anyone for the main girls or Kartik, but I really like Kate Winslet as Virgina/Mary!

I never thought of Kate Winslet as Virginia but it's a good idea
this is what I would like for the cast link

Gemma: Lucy Boynton or Rachel Hurd Wood
Pippa: Emily Browning, camilla bell or Vanessa Hudgens
Felicity: Taylor Momsen, Dakota Fanning, or Arielle Kebbel

I'm sure some people will hate these picks, and some of the picks may be too old or too young, but I like them

I really like the idea of Reece Ritchie (the guy from The Lovely Bones) playing Kartik.

Gemma-Rachel Hurd-Wood. Lucy Boynton looks too youngish
Pippa- Emily Browning because i think she is an amazing actress an is very underrated and should have her time to shine
Felicity- I like the idea of Dakota Fanning but idk she is doing the twilight saga so i'm not sure if she'd do any more teen books into movies.

Gemma-Amanda Bynes or Karen Gillan
Pippa-Georgia Moffett (from Doctor Who: Doctor Daughter)
Ann-Emily Browning or Anna Popplewell
Felicity-Imogen Poots
Virginia Doyle-Naomi Watts or Cate Blanchett
Miss Moore-Eva Green or Rachel Weisz
Mary Dowd-Emma Watson
Sarah Rees-Toome-Karen Gillan or Amanda Seyfried

Gemma: Sophie Turner
Pippa: Felicity Jones, Alexis Bledel, or Kaya Scodelario
Ann: Sophie McShera
Felicity: ???