Noah Baumbach and Greta Gerwig pose for a photo in Venice, Italy in August 2022.Photo:Daniele Venturelli/Getty

Noah Baumbach and Greta Gerwig attends the Cinecittà And Academy Of Motion Picture, Art & Science Dinner

Daniele Venturelli/Getty

Greta Gerwigis spilling the details of her andNoah Baumbach’s decision to finally tie the knot!

In December, a representative for theBarbiedirector, 40, confirmed that she and her longtime partner, 54,officially wed at New York City Hallafter 12 years together.

At the Palm Springs International Film Festival Awards Gala Thursday night, Gerwig shared withETwhy she and Baumbach decided now was the right time to call each other husband and wife.

“We wanted to do it, we kept waiting for a moment to make a big wedding, but suddenly we were like, ‘We’ll do a big wedding at some point, but let’s just do it,’ " she told the outlet.

“And we were like, ‘Let’s go to city hall, and let’s go toBilly Joel,’ " added Gerwig, who was photographed with her husband onDec. 19 at Madison Square Garden, where they apparently celebrated their nuptials.

Greta Gerwig and Noah Baumbach attend the December 2023 screening of ‘The Boys In The Boat’ in New York City.Dia Dipasupil/Getty

Greta Gerwig and Noah Baumbach attend “The Boys In The Boat” New York Screening at Museum of Modern Art on December 13, 2023 in New York City.

Dia Dipasupil/Getty

Never miss a story — sign up forPEOPLE’s free daily newsletterto stay up-to-date on the best of what PEOPLE has to offer, from celebrity news to compelling human interest stories.

In December 2019, Baumbach opened up toVogueabout what he enjoys most about working alongside Gerwig. The pair have teamed up on several projects, includingWhite Noise,Mistress America,Greenberg,Frances Haand the 2023 blockbusterBarbie.

“I think the pleasure of writing for us is that it seeps into everything,” he told the outlet. “I’d show her a cut of my movie, and then a few months later, I’m watching her movie.”

“I don’t want to sound sickeningly happy, but it’s a truly great thing to watch someone you love make something and love the thing they make,” Baumbach added. “I don’t know how else to say it without saying great a lot.”

Greta Gerwig attends the European premiere of ‘Barbie’ in July 2023.John Phillips/Getty Images for Warner Bros.

Greta Gerwig attends The European Premiere Of “Barbie”

John Phillips/Getty Images for Warner Bros.

During aQ&A withboth Gerwig andJudd Apatowin October, theBarbiescreenwriter revealed that while he initially thought the project was “a terrible idea,” Gerwig signed him up.

Eventually, as Baumbach said, he realized the film was the “best thing we’ve ever written.”

“I know enough always just to follow what Greta says, so even in my bellyaching and revolting, I kind of knew, ‘Well if she really believes it, then there’s something there,’ " he said, perVariety.

source: people.com