Naomi Watts and Billy Crudup made their red carpet debut at Sunday's Screen Actors Guild (SAG) Awards, four years after they first engaged.
The Loudest Voice Actress, 53, who was not nominated on the night, supported her partner, who was approved for Outstanding Performance by a Male Actor in a Drama Series (The Morning Show), but Lee Jung- Lost to J. (squid game).
The couple, who have been dating since starring in the Netflix show Gypsy Back in 2017, put on a charming display as they posed for photos at Barker Hangar in Santa Monica, Los Angeles.
Naomi and Billy, 43, have kept their romance out of the limelight and the actor previously explained why he tries to keep his personal life private.
The US star said in 2018: 'I try to make it a point not to comment publicly one way or another about my personal life.
'I especially don't see the benefit of getting people to know too much about me if I'm constantly trying to make them think I'm someone else.'
Naomi has Sasha, 14, and Kai, 13, with actor Liev Schreiber — whom she dated between 2005 and 2016 — while Billie has a son, William, 18, with Mary-Louise Parker.
Naomi and Liv 'spent a lot of time together' during the coronavirus pandemic for the sake of their children.
She said in 2020: 'We've spent a lot of time together. [We] have a single goal in mind, which is the health and well-being of the children.'
The King Kong star has previously said that a "good relationship" with his former partner is an "absolute priority" for his children.
She said: 'Having a good relationship has always been our end, and we put a lot of energy and effort into building it. It's not always easy, as they say in America.
'But it's totally understandable that it's an absolute priority, because it really matters to the kids. You can see how many things that can make a child nervous, feeling anxious, and knowing that their parents can be in the same room and happily ever after means a lot to them. '
In the evening, Naomi showed off her glamorous style as she attended the star-studded award ceremony.
The British actress wore a black Fendi SS22 Couture floor-length dress with cut-out detail to attend the bash with her partner.
A touch of glitz was added to her look in the form of a dress adorned with sequins and jewelry.
The star sported a small Tyler Ellis clutch purse and opted for dazzling Cartier jewelery for her outing.
She went for a simple look with her makeup on to highlight her beautiful facial features and show off her natural beauty.
Naomi took to Instagram to share some photos of herself and Billy traveling to the awards.
His partner was nominated for Outstanding Performance by a Male Actor in a Drama Series for his role as Corey Ellison on The Morning Show.
However, he unfortunately lost to eventual winner Lee Jung-jae.
The 28th Annual Screen Actors Guild Awards celebrated the best of film and television in Hollywood.
A-list stars attended the spectacular television event held at Barker Hangar.
There was no fixed host for the presentation, and none since 2020 when Schitt's Creek stars Eugene Levy and Dan Levy opened and closed the show.
SAG-AFTRA's newly appointed President Fran Drescher said last month: 'After such a long time, we are excited to be back together again at the 28th Annual Screen Actors Guild Awards this year.'
Jessica Chastain and Will Smith earned top individual acting awards for their transformative Titanic roles at the 28th annual event.