Underscarf

White and crisp and full, but pinned over an underscarf, and this underscarf was decorated with lace.

Source: wiktionary

She pays much attention to wearing matching headscarves, but does not like the style that many younger Turkish girls have adopted, who use underscarves and other materials to produce a high and voluminous head shape.

Source: wiktionary

Women with a Turkish background, on the other hand, have begun to wear more than square silk headscarfs; they now also use long pashmina shawls combined with underscarfs in contrasting colours (TB 2011-13, p.8).

Source: wiktionary