Are you looking for free textures or are you willing to pay? Paul Hafeli has some wonderful P4 Nude Female for sale at BB Bays. Tim Laubach has some great free ones that are photo realistic. I'm not familiar with allerleirauh's work in textures, she's only done two that I know. One is for the P4 male the other for an old woman. Catherina, has some head textures for sale at Renderosity Store. Byte Me Ok has some head and body textures for the Vicky model that look photo realistic at Renderosity Store. No texture will have pores jumping out at you without using some other post work. Darth's suggestion is your best bet. Try using or making a bum map.