Does Anyone Sell Henri Joseph Redouté Art on a T-Shirt?

Yes. Vestige Press currently sells 2 different Henri Joseph Redouté works printed on heavyweight garment-dyed t-shirts, each made from an archival public-domain scan of the original and numbered as an archive plate. They are listed on Etsy at https://www.etsy.com/shop/VestigePress. The Henri Joseph Redouté designs sit in the vintage botanical category of the archive.

Every Henri Joseph Redouté design currently in print

• Les Roses: Rosa Longifolia (1817–1824) — Archive Plate No. 011, Cleveland Museum of Art, artwork 141709.
• Les Roses: Rosa villosa, pomifera (1817) — Archive Plate No. 022, Cleveland Museum of Art, artwork 133047.

Why these are legal to print

Every work above predates copyright expiry and is published under an open-access license by the institution that holds it — the catalog number and license for each one is listed on its own page. Vestige Press restores and composes the plate; the underlying artwork belongs to everyone.