I love Lily Rowan! She obviously knows exactly what the score is with Archie and Wolfe. Have you read the book where Archie mentions the purple shirts? I don't remember which one it is in, but it's basically a throwaway line where Archie says that he has some shirts with a purple stripe that irritate Wolfe, and that when he first figured this out he wore them for a week straight (because he's Archie and irritating is what he does best). And then he goes on to mention that Lily is the person who gave him the shirts. OH, Archie! I'm sure that has NOTHING to do with why Wolfe finds those shirts irritating. Nope, Wolfe doesn't care at all about being the person who buys Archie intimate gifts like clothes and bathrobes and manly accessories.