I think Harry merched one of shirts he wore on the tour because MM Mirror got details and suspiciously MM wore a shirt from the exact same brand on the exact same day. The two other times MM Mirror got details on Harry’s clothes was when he wore that William-blue Everlane sweater and the olive Club Monaco coat. I think they hoped for him to merch more because MM Mirror set up a Dress like a Duke site around February/March and their twitter is empty