4t girls 3-piece Buffalo plaid Christmas truck tunic, scarf and leggings

Boutique tag says M, boutique size chart says 3t, and it did fit my child when she was in 3t sizes, but fit better when she was in 4t size. 3-piece tunic, scarf and leggings set for Christmas/wintertime. Leggings and scarf are red and black Buffalo plaid. Tunic is gray with vintage Buffalo plaid Christmas truck with Christmas tree in the back. Some staining at front, pictured, but mostly hidden by the scarf.