Michael Stars silk hi-low hem racer back tank top size M excellent condition

This is a Michael Stars Anthropologie silk hi-low hem racer back tank in an abstract black and white print. The neck and arm holes have a ribbed knit edge and there is a small exposed zipper closure at the back. It’s a size medium. The brand tag stitching has come undone on one side and the fabric composition tag was cut. I’m very certain it is silk though. Otherwise it’s in excellent condition. Measurements Pit to pit 21” Shoulder to hem front 23.5”, back 26” All measurements are taken while laying flat and are approximate