Vintage Lanvin shirt - rare!

Incredible vintage Lanvin button up shirt with knit collar, pearl buttons, and expert stitching throughout. Crazy 80s print I’m guessing, no fabric content label, but the collar feels like silk (knit), and the body like viscose/silk. Made in Switzerland. Tagged size 50 or 15 3/4. Nice breezy shirt for summer. The lower buttons are hidden behind a placket. One chest pocket. Measures P2P 23” L 31”. If you know the brand, the shirt speaks for itself. A rare item.