Service uniform? (8)

I believe the answer is:

surplice

(Other definitions for surplice that I've seen before include "Loose white clerical vestment" , "Wide-sleeved white garment for clergy" , "I scruple to wear white vestment" , "Loose white ecclesiastical garment" , "White gown worn over a cassock" .)

I've seen this clue in The Sun.

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