AceShowbiz -

Jennifer Lawrence and Darren Aronofsky finally posed together on the red carpet. The couple made their relationship red-carpet official when attending the New York premiere of their movie "mother!" at Radio City Music Hall.

While they avoided posing side by side at the Venice Film Festival earlier this month, they flaunted PDA at the special screening on Wednesday night, September 13. The helmer put his hand on her waist while posing for the camera. They were later joined by another star of the movie, Javier Bardem.

Jennifer looked like a goddess that night, wearing a white Dior couture gown with full tulle skirt and elegantly draped bodice. She pinned her hair in an elegant updo with flowers as accessories.

Later at the after-party, Jennifer traded the white dress for a metallic number by Ralph and Russo. She oozed Hollywood glamor with the sparkly dress as she kept her makeup and hairdo. She was seen posing with Emma Stone, who showed some skin in a black number with a sheer top.

Back at the "mother!" premiere, Keri Russell came with her "The Americans" co-star and real-life partner Matthew Rhys. They appeared like any normal guests at first, until Matthew, who wore a black blazer, a simple tee and dark jeans, decided to swap clothes with one of his pals.

The Welsh actor stripped off in front of photographers and Keri couldn't help laughing at his antics. He then put on a shirt that promoted the People's Climate March in Washington, D.C.

"mother!" follows a couple, played by Jennifer Lawrence and Javier Bardem, whose relationship is tested when uninvited guests arrive at their home, disrupting their tranquil existence. Michelle Pfeiffer, Ed Harris and Kristen Wiig also star in the movie, which is set to be released in the U.S. on September 15. The movie received mostly positive reviews when it debuted at the Venice Film Festival.