The Hollywood starlet looked breathtaking in a sheer, floor-skimming gown as she posed for pictures on the red carpet at the Odeon Cinema in Leicester Square.
The show-stopping Atelier Versace dress clung to the 27-year-old’s frame.
Speaking about the film, the actress said the emotional demand of the project was “more than I’ve ever given”.
The Oscar-winning star plays an unnamed woman whose life with her husband is thrown into terrifying chaos when uninvited visitors arrive at their house. The movie, directed by her boyfriend Darren Aronofsky, involves a scene where she hyperventilates heavily and the actress accidentally tore her diaphragm.
“The physical challenge wasn’t really that much, the birth was a lot of energy, but really the emotional demand was more than I have ever given before. That was a lot,” she told the Press Association.
The movie has divided critics, who have struggled to categorise it, but the actress said she enjoys projects that don’t fit into one genre. She added: “Those are the films that I like to watch, those are the films that I find interesting.
“Our reviews are just cracking me up, people either love it or they absolutely hate it and I think that is so cool, there is not one person that has walked out and (shrugged).”
Aronofsky penned the script in just five days and Lawrence said she had an immediate reaction to it. She said: “I texted ‘I think you have severe psychological problems’ followed by ‘it’s a masterpiece’. “Darren just had these ideas of these huge themes that I had never heard of before, connecting universal, biblical ideas and condensing it all into a house and a relationship, it was unbelievable.
“The best part of the movie is there are a million different ways you can interpret the metaphors and allegories but if you look at it in a very straightforward way getting into a relationship with a narcissist is going to make you feel very insecure and it’s going to be draining, I don’t recommend doing it.”
Aronofsky, who arrived on the red carpet separately to the actress hailed her has “a remarkable talent”. He said: “She is just so deeply absorbed in her talent that she can turn any emotion out at any time so she did go pretty far, she ripped her diaphragm so it was very intense for her but it was an amazing thing to watch.”
He added: “I hope people are really moved in every way possible.