Hi, as some of you know, I've been pretty obsessed with the H Constance lately ! I'd like to ask for your opinions please... What do you think is the best size for me? I'm 5 foot 7, and if I do get a Constance, I'd like to use it as more of an evening bag. For owners of Constance, could you pls tell me your personal experiences with your bags? Is the size 18 indeed very small that you can hardly fit anything into it? Thanks for your help, tpf-ers!!