Naomi Watts smooches hubby Billy Crudup in tender snap caught by Mark Ruffalo

Naomi Watts and Billy Crudup may have gone to a “no-fuss” wedding at a Manhattan courthouse last week, but that didn’t stop them from celebrating with some A-List guests.

Marvel star Mark Ruffalo was on hand to witness the happy event and shared a tender snap of the newlyweds kissing.

Ruffalo celebrated with the couple along with his wife Sunrise Coigney.

He posted a photo with the group, featuring Josh Hamilton – who happened to be celebrating his birthday – and his wife Lily Thorne.

Naomi’s gorgeous white wedding look was an Oscar de la Renta Sweetheart Water Lilly Guipure dress, which sells for around $5,000.

You may kiss the bride! Naomi Watts cuddles hubby Billy Crudup in tender photo captured by Mark Ruffalo – after couple tied the knot in Manhattan

It had thick floral lace straps and the sleeveless design showed off her toned arms.

The 5ft5in beauty lifted her stature and wore a set of gold open-toe heels under her ankle-length skirt.

She completed the semi-casual summer look with thick cream cat-eye sunglasses and wore her beautiful blonde hair in a playful, wavy bob.

Billy was dressed more casually, but he still looked quite elegant.

Wearing a navy blue suit, the Watchmen actor looked sparkling with his clean-shaven face and shaggy salt-and-pepper hair that was combed back dramatically.

After the ceremony, Naomi shared a photo of the newlywed couple with actor Mark Ruffalo and his wife Sunrise Coigney.  Also pictured was Josh Hamilton - who happened to be celebrating his birthday - and his wife Lily Thorne

After the ceremony, Naomi shared a photo of the newlywed couple with actor Mark Ruffalo and his wife Sunrise Coigney. Also pictured was Josh Hamilton – who happened to be celebrating his birthday – and his wife Lily Thorne

Australian actor Naomi Watts, 54, married her long-term boyfriend Billy Crudup, 54, on Friday

Australian actor Naomi Watts, 54, married her long-term boyfriend Billy Crudup, 54, on Friday

Meanwhile, Naomi's ex-boyfriend Liev Schreiber, 55, also expressed his best wishes, saying,

Meanwhile, Naomi’s ex-boyfriend Liev Schreiber, 55, also expressed his best wishes, saying, “Congratulations! Delicious’

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 closely associated with her patients, while Crudup played her husband .

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

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

Watts and Schreiber began their relationship in 2005, shortly after she dated the late actor Heath Ledger from 2002-2004.

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

Naomi also shared a close-up photo of her posing with her white bouquet, along with a caption revealing that she bought her flowers from a local deli.

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

Naomi and Billy looked excited for their wedding ceremony on Friday

Naomi and Billy looked excited for their wedding ceremony on Friday

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’

Despite ending their year-long relationship, Watts and Schreiber still go to events together to support their children, and were even seen smiling together with their current partners in photos taken at Kai’s graduation.

In a 2019 interview with Porter Editshe admitted that the parents were “doing something completely different.”

“I’m quite proud of us, trite as that may sound. We have made it our absolute priority to be good and kind to each other and we are absolutely committed to that.’

Schreiber announced earlier this year that he is expecting his first child with girlfriend Taylor Neisen, who is a model.

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

He divorced the actress, whom he began dating in 1996, in November 2003, when she was seven months pregnant with their son.