a1350 in G. L. Brook (1968) 39 Body ant brest wel mad al,..eyþer side soft ase sylk.
c1386 G. Chaucer 605 Theigh thou..straw her cage faire and soft as silk.
c1400 126 My bloode ys nessher than ys sylke.
a1513 W. Dunbar Tua Mariit Wemen in (1998) I. 43 Soft and soupill as the silk.
c1540 (?a1400) 3993 Cassandra..was a Clene Maydon, Semely of a Sise, as the silke white.
a1732 J. Gay New Song Similes in (1784) II. 115 Plump as a Partridge was I known, And Soft as Silk my Skin.