female 100% het pied + extra gene. depending on your taste. lesser het pied (lesser pieds tend to be completely white with a white more pure than BELs, ivories, or super fires). Or spider het pied (spider pieds typically have a normal colored head and neck, the rest of the body is perfect pied white.). Or enchi het pied or pastel het pied, or something else het pied.

you should also consider an albino + codominant/dominant female or a 100% het albino + codominant/dominant female