surplice

messukasukka A liturgical vestment of the Christian Church. It has the form of a tunic of white linen or cotton material, with wide or moderately wide sleeves, reaching to the hips or knees. It usually features lace decoration and may have embroidered bordures.
1942, (w), (w), “The Blessing”,http://www.gutenberg.net.au/ebooks04/0400201.txt

He was a wide man and looked wider in his surplice, especially from our pew, which was close up under the pulpit.