HM tunic sweater NWOT

Absolutely new sweater States size US 14y+, to compare: I am solid size S, and this fits me well, just not my style unfortunately. I have slightly fleshy upper arms, and usually find sweaters too tight in that area, but this has room and is loose enough, which leads me to believe it would fit M as well. pit to pit laying flat 19", with stretch to 22" length 26" Feel free to ask questions