Maybe you can have Keimi tailor something. She's a mermaid and she deals with the Luceti wings a lot, so maybe she can make something.

Mah, I know my clothes change into the feathers though, but I'm not sure that would be the same for you? [Holds up an arm and switches it into a phoenix wing in demonstration. Purple shirt still there, but where it's a wing, the fabric seamlessly switches from purple to flaming blue like the rest of his flames.]