Naomi Watts and Billy Crudup marry in the US

Naomi Watts and Billy Crudup are married! Australian actress shares adorable wedding day photo as they tie the knot in the US

Naomi Watts married her long-term boyfriend Billy Crudup on Saturday.

The Australian actress posted a photo of the couple, both aged 54, posing on the steps of a historic building in the US shortly after tying the knot, adding the caption: ‘Hitched.

Naomi looked stunning in a $7400 white Oscar de la Renta Sweetheart Water Lilly Guipure dress next to her actor husband. 

Billy meanwhile looked suave in a black suit and white shirt, worn slightly unbuttoned. 

Naomi also shared a close-up photo of herself posing with her white bouquet, along with a caption that revealed she’d purchased her flowers from a local deli. 

Naomi Watts married her long-term boyfriend Billy Crudup on Saturday 

The couple’s celebrity friends were quick to congratulate them on the happy occasion. 

‘Yipeeeeeee!!!! Sending so much love,’ Gwyneth Paltrow commented on Naomi;s post, while Miranda Kerr added: ‘Congratulations’.

It comes after they set off rumours that they might have tied the knot after she was seen wearing what looked like a wedding band on Friday.

The Mulholland Drive star and the Almost Famous actor were seen arriving at an apartment in New York City in pictures obtained by Page Six, but Naomi looked particular resplendent in a white Oscar de la Renta dress with gorgeous lacy floral designs, which could have been used as a wedding dress.

She shared this sweet photo of the couple posing together after the ceremony, adding the caption: 'Hubby'

 She shared this sweet photo of the couple posing together after the ceremony, adding the caption: ‘Hubby’  

But it was the gold wedding band on her ring finger — which appeared to have been newly added alongside her rumoured engagement ring — that made fans wonder if she and Billy might have tied the knot.

The couple looked particularly sweet as they returned from their outing on Friday, and Naomi even ramped up the secret wedding rumours by carrying a lovely yet reserved bouquet of white roses and other matching flowers. 

The Watchmen actor sported a navy blue suit, and he looked dashing with his clean-shaven visage and his shaggy salt-and-pepper hair swept back dramatically.

Naomi looked stunning in a $7400 white Oscar de la Renta Sweetheart Water Lilly Guipure dress

Naomi looked stunning in a $7400 white Oscar de la Renta Sweetheart Water Lilly Guipure dress

Billy brightened up the ensemble with a simple white dress shirt sans tie, and he wore classic black dress shoes.

She and Billy met on the set of her 2017 Netflix series Gypsy, in which she starred as a therapist who uses an alias to develop close (and unethical) relationships with people intimately connected to her patients, while Crudup played her husband.

The costars began a relationship later in 2017, a year after she had split from her partner of 11 years, the actor Liev Schreiber.

The friendly exes share two children: Kai, 14, and Sasha, 15.

Since they began dating, Naomi and Billy have kept their public appearances to a minimum and have largely avoided commenting on their relationship, though she has occasionally shared sweet photos of herself with her actor boyfriend on social media.

Her celebrity friends were quick to congratulate them on the momentous occasion

Her celebrity friends were quick to congratulate them on the momentous occasion

She and Billy met on the set of her 2017 Netflix series Gypsy, in which she starred as a therapist who uses an alias to develop close (and unethical) relationships with people intimately connected to her patients, while Crudup played her husband

She and Billy met on the set of her 2017 Netflix series Gypsy, in which she starred as a therapist who uses an alias to develop close (and unethical) relationships with people intimately connected to her patients, while Crudup played her husband

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