Blue and Cream Plaid Coat

Can you guess? Yet another gorgeous coat that is too small & I am giving up on wearing it again. It's surprisingly warm in fabric but impractical in structure with a 2 button closure it's more of a vintage cut. Lining is impeccable no flaws. Measurements are difficult as it's got drop shoulders but it's about 24" pit to pit & 33 " from top to bottom. Don't recall OG price unfortunately: I did buy it on sale though as my friend used to own a clothing store.