5'2" and the Galleria GM....

I am a little bit bigger than you 1,66m should be 5'5" and I have the pm, it's still big enough to put loads of stuff in it. i tried the gm when I was buying my galiera and it just looked ridiculous on me. But I am quite petite, maybe it was because of that.

The best would be, like the other girls here told you, to just go to your next LV-store and try them both on. If you still feel comfy with the GM and think it looks good on you, just go for it ;)