This movie probably came out in the late 80's, early 90's. It's about two sisters one plain looking and the other is beautiful. The plain is married and they all live in this mansion. The husband wants to be with the younger and more beautiful sister so he plots to take her on an outing. His plain looking wife has no idea that this boat trip is for her murder. I believe they went into an alligator infested swamp where she was thrown over, disfigured and left for dead.

A doctor found her, soon to be her husband, and restored her health and looks with surgery. She now became so beautiful that she went into modeling. All the while she never forgot what had happened to her and plotted revenge against her ex-husband and sister.

She finally had her opportunity in making her way back into their lives. The ex I believe fell in love with her and her beauty. He and her sister had no idea who she was. She was buying time to plot her revenge. This opportunity came at a party. I forgot what it was for.

This is where it sort of goes vague. I saw this when I was in my early teens.

Hmm, this is kind of odd... a question pretty much identical to yours was answered yesterday by Adolf_Hilfiger here:https://www.askmehelpdesk.com/movies/name-film-747916.html