A surplice, in England and America usually one shorter and less full than the ordinary surplice and with short sleeves, or sometimes none.
a short robe often worn by choir members over cassocks. ( Photos courtesy - Robert Gaspard Co.)
a short, white outer garment often worn by choir members and acolytes to cover their cassocks
A white garment similar to a surplice, but shorter and without a cross on the front. Worn by choir and acolytes over the cassock. It is not as long or as full as the surplice.
A short white vestment often worn by choir members over a cassock.
a short surplice, sleeveless or with short sleeves, worn esp. by choristers Source