grisette n.

c. 1700, "gray woolen fabric," from French grisette, diminutive of gris "grey," which is from Frankish or some other Germanic source (see grey (adj.)). From 1723 as "young French working girl," especially a shopgirl or seamstress, on the notion of wearing clothing made from such fabric; "commonly applied by foreigners in Paris to the young women of this who are free in their manners on the streets and in the shops" [Century Dictionary].