long wavy (black, blonde whatever you like) yndh hair for default hair style.

Yennefer's default outfit: She is wearing a black and white fantasy yndo outfit featuring a black jacket with a fur-trimmed collar, laced front, and striped ruffled sleeves, worn over a high-collared white shirt, paired with black gloves with fur cuffs, a thin brown leather belt, tight black pants with vertical stitch details, a black velvet choker with a pendant, and tall dark brown leather thigh-high boots fastened with multiple buckles.

Yennefer's DLC outfit: She is wearing an all-black gothic fantasy ynso outfit consisting of an off-the-shoulder corset top accented with dark feather trim around the chest and arms, matching long black leather gloves, a wrapped scarf around the neck, a black choker with a pendant, a wide studded waist belt, a black waist apron with front slits revealing lace thigh-high stockings, and knee-high dark leather boots adorned with horizontal straps and metal studs.

Her outfits are not perfectly accurate, but it just works.