Emmanuelle 4 is 1984 English-language French film directed by Francis Leroi and Iris Letans.
After an encounter at a Los Angeles party, she decides she's had enough – she will go to Brazil and get extensive plastic surgery.
This way he will never recognize her again, much less find her, and it will make for a great article which she promises to hand in to a California newspaper.
Sylvia goes through with it, and becomes a new woman named Emmanuelle (Mia Nygren); she is now a twenty-year-old virgin.
[1] In a contemporary review, John Pym of the Monthly Film Bulletin stated that "a reach-me-down mish-mash, padded with flashbacks and what appear to be hardcore sequences, and scissored by many hands."