Olivaceous shirt - NWT! 100% cotton. Ruffle sleeves and pull over the head style. The size Medium is the brand Olivaceous. The size Large is the exact same shirt. No differences. However, it was labelled under Avara boutique’s personal brand. I’ve put the shirts side by side in the photo to illustrate there is zero difference. So if you are interested, I have the matching shorts listed in a size Large. They match the Large shirt exactly. The Medium chest measures approximately 21 inches and the length is approximately 21 inches. The Large chest measures approximately 22 inches and the length is approximately 22 inches.