Vintage Bullocks Wilshire Nylon Slip

I believe this slip is 60s, since it has a side seam zipper that is made out of either nylon or plastic. The slip feels like thick vintage nylon. It is kind of an off-white. It has a kick pleat in back. I believe that the label says size 34, but it's faint and I'm not 100%. Bust measures almost 38" around Waist 30" Hips almost 40" Length from shoulder: 40" I washed it and it is in very good condition.