CONTEXT: Changing / Dressing-Undressing
In this scene from the movie “Head in the Clouds”, Gilda Bessé (Charlize Theron) ask Guy Malyon (Stuart Townsend) to help fasten the buttons down the back of her dress, although as he’s helping it turns into a makeout.
https://tvtropes.org/pmwiki/pmwiki.php/Main/ZipMeUp