There is no sex whatsoever shown in this movie, as Bettie Page never did anything pornographic, but very explicit nude pictures and vintage film clips are shown throughout the film. The nude pictures include both partial nudity (breasts and buttocks) and also full nudity (where her pubic hair can be seen, and even a few pictures where some of the vulva/clitoris can be seen through her pubic hair when her legs are apart).
The nudity is very graphic and explicit.