Brunette Girl Reveals Her White Pinafore And Hold-ups With Garter Belts Suspenders At The Window On The Sofa Chair

The name reflects that the pinafore was formerly pinned (pin) to the front (afore) of a dress. The pinafore had no buttons, was simply "pinned on the front" which led to the term "pinafore."
Differentiations
Pinafores are often confused with smocks. Some languages do not differentiate between these different garments. The pinafore differs from a smock in that it does not have sleeves and there is no back to the bodice. Smocks have both sleeves and a full bodice, both front and back.