I remember being completely clueless about which bags LV had made and which they hadn't, especially because a lot of the lower end brands make so many different styles that you can't definitely know what was made and what wasn't, so when I would see a bag that now would scream "FAKE!!" to me I would just think "Oh it must be a really unique one!".
And that's how I learned to do research
And that's how I learned to do research