Certainly it's not it's not "silly" ... and he could submit anywhere he wants and yes, London is a fashion capital. But ... it would be a waste of his time an his money, even if they like his look .... especially because he lives thousands of miles away on the southwest coast of the US. See my post above (#
) ... to read why it's best to start with a good mother agent at home, first. And this is how and why it's usually done this way.