Intimate kissing throughout the movie. Longest duration is about 10 seconds. Never goes further than this.
Cleavage is seen throughout. There is also a scene where Jennifer C is seen hooking her thigh high stockings up.
While at Sinclaire's house, Jennie goes to change into a dress that Sinclaire wants her to try on. She then calls him in, asking if he can help her with the zipper. While Sinclaire begins to unzip it, she smashes him over the head with a vase. Very little skin is shown here beyond what the dress already shows (which is some cleavage).
Earlier, that same bad guy gazes down her dress at her breasts, and the camera lets us see what he sees, but it is only cleavage.