When did Will Arnett split from Alessandra Brawn? Details explored as actor reportedly dating Carolyn Murphy

On September 6, 2025, media outlets confirmed a change in Will Arnett’s personal life: he quietly ended his relationship with Alessandra Brawn in late 2024. The split came after about five years together, during which the pair welcomed a son, Denny.

Despite stepping away from their romantic partnership, both Arnett and Brawn reportedly remain fully committed to raising their child together without drama. Their last appearance as a couple dates back to September 2024.

Since then, Arnett has been seen in the company of supermodel Carolyn Murphy, 51, at a West End performance of Good Night, Oscar in London late August. A photo posted by Sean Hayes captured the two backstage, smiling alongside Hayes and his husband.

Murphy has a grown son of her own, and her presence in recent public appearances suggests a possible new chapter for Arnett’s personal life.

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Will Arnett and Alessandra Brawn ended their relationship quietly in late 2024

People reported that the breakup took place toward the end of 2024 and that Will Arnett and Alessandra Brawn have intentionally kept details private.

Their last known public outing together was in September 2024, and since then; both have focused on parenting. The account emphasizes that the split was low-key and handled away from headlines.

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Arnett has been seen with Carolyn Murphy after the split

Carolyn Murphy, a longtime Estée Lauder ambassador and a model with a decades-long career, was photographed alongside Will Arnett at the West End show. The Instagram photo by Sean Hayes showed them smiling backstage.

Hayes captioned the post, “Another recent surprise visit from one of the greats. Love you, Willie. ❤️ #GoodNightOscar.”

People noted that Murphy is a mother to a 24-year-old son.

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Family life and co-parenting remain central for Arnett

Will Arnett is the father of three: Denny with Alessandra Brawn, and Archie and Abel with his ex-wife Amy Poehler. Public coverage highlights that Arnett places a high priority on his role as a parent.

In a September 2024 interview on the Our Way podcast, Arnett said about becoming a father:

“I’m crazy about my kids. I always joked that before I had kids, I didn’t notice them. I didn’t have my first son until I was 38.”

He added:

“And then you have kids of your own and you go, ‘Wow!’ It really brought everything into focus for me in life and it really put everything into perspective.”

Jason Bateman also praised Arnett’s parenting on HBO’s Smartless: On the Road, saying he had noticed and admired the way Arnett balances family and work.

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Will Arnett’s work and public schedule continue amid personal changes

Professionally, Arnett keeps a busy schedule. His film, Is This Thing On?, directed by Bradley Cooper, is set to have its world premiere at the New York Film Festival on October 10, 2025, and will open in theatres on December 19, 2025.

He also remains a co-host of the SmartLess podcast. These ongoing projects mean Will Arnett is balancing public commitments with family responsibilities.