At the store, they told me if I took it to New York they could do it. Someone I follow on Instagram had theirs for a few months and got it personalized later. Either way, I love the bag, but I do hope it works! I know for the ABCDior pop-ups you can bring a used bag and they will personalize it, but not sure.Not sure if they can personalize the Book Tote after it has been produced. It looks great with or without the personalization. I am really tempted by a personalized one because it will be one of a kind!