My boy is also a model, he doesn't miss a single mirror. I thought he was a "narcissist" but I noticed how he copies my behavior when choosing clothes for my daughter :)) I often buy dresses for my eldest, and my son decided that he is an adult and began to choose his boys jumpsuit in https://thetrendytoddlers.com/collections/baby-boy-jumpsuits section (although it is very small for him already). We have a third child coming soon, I think he wants to give him presents. And every time he can't choose what to put in the basket, he stands up in front of the mirror and makes a big fuss. But he does not go shopping, but he can look at the assortment in the online shop (he found a way to buy something without even leaving the house).