- Country: France, Italy
- Genres: Drama
- Release: 1969-09-08
- Director: Roberto Malenotti
- Writers: Brunello Rondi , Roberto Malenotti , Alessandro Fallay
- Language: Italian
- Stars: Nathalie Delon , Susan Strasberg , Massimo Girotti , Giancarlo Giannini , Lars Bloch , Franco Abbina , Gianni Pulone , Attilio Dottesio , Nicoletta Elmi , Rossana Canghiari
- Runtime: 100 min
- Awards: N/A
- AKA: Oi dyo amartoles (Greece) , My Sister, My Love (United States of America) , Kız Kardeşler (Turkey) , Oudot sisaret (Finland) , As Duas Irmãs (Brazil) , Umarmung , As Irmãs (Portugal, Portuguese Republic) , The Sisters , The Sisters (United States of America) , Las hermanas (Argentina) , Les deux soeurs (France, French Republic) , The Sisters (United Kingdom) , Aftes pou agapisan (Paraxenes sheseis) (Greece) , Le sorelle (Italy) , 姉妹(1969) (Japan) , Le sorelle
- Plot: Diana's marriage has ended in divorce, so she goes to stay for a while with her younger sister Martha, whom she hasn't seen in ages. However, Diana is actually there to try to rekindle the passionate incestuous relationship that she and her sister once had until Martha decided to end it and leave Diana for good. Diana accepted it at the time, but after she got married she realized she could never love anyone like she loves Martha and she will never be happy without her. But Martha is now married to a wealthy older man and enjoys her Diana-free married life, although she does cheat on her husband occasionally--but he doesn't mind. Diana, mad with longing and lust for her sister, tries everything to convince her to come back to her, but Martha would rather die.
- IMDB:tt0065022
The Sisters Cast · · · ALL
Roberto Malenotti
Director
Nathalie Delon
Diana
Susan Strasberg
Martha
Massimo Girotti
Alex
Giancarlo Giannini
Dario
Lars Bloch
Martha's Lover
Franco Abbina
Party Guest
Gianni Pulone
Party Guest
Attilio Dottesio
Party Guest
Alfonso Giganti
Diana's Driver (uncredited)
Filippo Perego
Party Guest (uncredited)