Naomi Watts and Billy Crudup are married! Australian actress shares adorable photo as they tie the knot in US - with the 54-year-old star wearing stunning floral dress

• Naomi stunned in a $7400 white Oscar de la Renta dress
• The couple have been dating since 2017, after she split from partner of 11 years Liev Schreiber

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

The British-Australian actress posted a photo of herself and her new husband, both aged 54, posing on the steps of looked to be a Manhattan courthouse shortly after tying the knot, adding the caption: 'Hitched.

Naomi looked stunning in a $7,400 white Oscar de la Renta Sweetheart Water Lilly Guipure dress next to her actor husband, who currently stars in The Morning Show. 

The Mulholland Drive star wore her cropped blonde hair curled and parted to the side, and accessorized her look with open-toed pumps, a diamond necklace and a gold wedding band. 

New York-born Billy meanwhile sported a navy blue suit, and he looked dashing with his clean-shaven visage and his shaggy salt-and-pepper hair swept back dramatically.

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

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. 

After the ceremony, Naomi shared a photo of the newlyweds celebrating with actor Mark Ruffalo and his wife Sunrise Coigney. 

Also pictured was Josh Hamilton - who was coincidentally celebrating his birthday - and his wife Lily Thorne. 

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'.

Naomi's ex-boyfriend Liev Schreiber, 55, who she previously dated for 11 years, also extended his well wishes by commenting: 'Congratulations!!! Gorgeous!!!'.

The famously secretive couple previously sparked marriage rumors after they were spotted in wedding attire in photos obtained by PageSix on Friday. 

Naomi first sparked rumors that she and Billy had gotten engaged earlier this year, when she debuted an enormous diamond with a tasteful marquise cut, along with a diamond-encrusted band.

The star however refused to confirm the engagement chatter, even after American Today show host Hoda Kotb directly referenced it during a late April appearance on the morning talk show.

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Toward the end of Naomi's segment, Hoda joked that he 'eye was hurting' from the 'big glint coming from some ring over here.'

'It just struck me, but it's beautiful,' she added.

Lest there be any doubt about her implied question, Hoda's co-host Savannah Guthrie added: 'Hoda is asking if you're engaged.'

But Naomi simply replied, 'So, the brain fog...'

Savannah went on to compliment the ring's design, but Naomi avoided saying more about her ring, while also not outright denying that she had gotten engaged to Billy.

So far, the Morning Show star has also avoided discussing the potential engagement. 

The King Kong star appeared to have worn the ring at least as early as March, and she was spotted displaying the sparkler on the red carpet at the 2023 Vanity Fair Oscar Party in Beverly Hills.

Naomi 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 Naomi had split from her partner of 11 years, the actor Liev Schreiber.

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

Billy is father to son William Atticus Parker, 19, who he shares with ex Mary Louise Parker. 

He caused a huge scandal in 2003 after ditching Parker while she was seven months pregnant with Atticus, then beginning a relationship with actress Clare Danes. 

The pair split around two years later, amid rumors Billy had been ditched by Clare for another co-star, British actor Hugh Dancy. 

Clare and Hugh wed in 2009, and remain married.  

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

During a past interview with PorterEdit in 2019, The Impossible actress opened up about their blended families and co-parenting together. 'We're doing things very differently.'

'I'm pretty proud of us, corny as that may sound. We've made it our absolute priority to be good and kind to each other and we're absolutely committed to that.'

Liev announced earlier this year that he's expecting his first child with model girlfriend Taylor Neisen.

Billy was long infamous for the terrible timing when he ended his multi-year relationship with Weeds star Mary-Louise Parker. 

He separated from the actress, who he began dating in 1996, in November of 2003, when she was seven months pregnant with their son. 

He subsequent began a relationship with Claire Danes that ended in 2006.