Shot in 1970 but released two years later after running the gamut of ludicrous British censorship hassles, THE VIRGIN WITCH is less of a horror movie than it is a softcore Euro-sexploitation flick featuring supernatural elements. It tells the story of a pair of sisters (real-life sibs Ann and Vicki Michelle) who end up falling into the clutches of a "white" magic coven, headed by a horny Charles Gray-like high priest and a stereotypical predatory lesbian high priestess who has designs on the older girl, and that setup serves as an excuse for acres of naked female flesh to be put on display. (It's interesting to note that European softcore and porn actresses of the time did not seem to suffer from the Chewbacca-esque and unruly "'70's bush" syndrome that their American counterparts often sported.)
really nothing to the story other than the two coven leaders both
wanting to get into the older sister's knickers (which they both succeed
at), the older sister getting into the idea of gaining power within the
coven and suddenly learning black magic in order to achieve her
from-out-of-nowhere evil ends, and the younger sister displaying minor
psychic abilities that do zero to advance the thin shred of a plot. The
copious amounts of nudity during all of this are the film's sole
redeeming feature, but that aspect grows old very fast, especially when
one considers how much actual porn is so readily available.
In short, THE VIRGIN WITCH is a curiosity at best, but if you choose to skip it you will miss absolutely nothing.