The sexy actress Natalie Portman - who locks lips with costar Mila Kunis in new movie Black Swan - says she's careful about what she does onsceen because she doesn't want her scenes to be taken out of context and used as porn!
"I'm definitely not a prude about sex or nudity, I just don't want do something that will end up in a screen grab on a porn site," she said.
Portman recently admitted she finds it difficult to live up to her reputation as glamorous Hollywood star because she just wants to slob out at home.
"Every actress I know is the messiest, grubbiest person," she said.
"It can make you feel very ugly at home, too, when you are always all made up then you wake up in the morning and your hair is disgusting and your face is disgusting."