J Crew Women’s Blue White Red Plaid Flannel Long Sleeve Button Down

eBay - jritch42

Brand 'J.CREW' matches exactly, Plaid pattern (blue, red, white) is identical, Shirt style (long-sleeve, button-down, two chest pockets) matches, Material appears to be flannel, consistent with source and product details, Overall form factor and dimensions are consistent

Market & Spruce Plaid Roll Tab Sleeve Button Up

Poshmark

Plaid pattern is nearly identical, Color scheme (blue, red, white) matches perfectly, Single left chest pocket matches, Rounded collar design matches, Curved hem matches, Flannel material appears consistent

Upcycled Flannel Shirt with Eyelet Trim

Etsy - PatchesNPickens

Plaid pattern is very similar, Color scheme (red, blue, white) matches