Michelle Williams welcomes third baby with husband Thomas Kail via surrogate
Michelle Williams has welcomed her fourth child - and third - with husband Thomas Kail, per People.
The actress, 44, is said to have welcomed her new child via surrogate six weeks ago.
A source said: 'They couldn't be happier to expand their family, and Matilda has been doting on her younger siblings.'

Michelle Williams has welcomed her fourth child and third with husband Thomas Kail
The new family of six has been spotted around their New York neighborhood.
DailyMail.com has contacted Michelle's representatives for comment.
She is mom to daughter Matilda, 19, whose father is the late Heath Ledger who passed away in 2008.
Michelle and Thomas got engaged in 2019 after working together on Fosse/Verdon and got married in March 2020.
They have son Hart, four, who they welcomed in June 2020 and another baby who joined the family in 2022.
The happy news comes hours after Michelle enjoyed a date night with her husband Thomas at the New York premiere of her steamy sex drama, Dying For Sex, on Wednesday.
The actress wore a revealing lilac gown with cut-out sides as she posed with the theatre director, 48, at the SVA Theatre.

Stylish: Michelle enjoyed a date night with her husband Thomas at the New York premiere of her drama, Dying For Sex, on Wednesday at SVA Theatre

Close: Michelle and Thomas held hands on the red carpet
Her character Molly is encouraged to make a life-altering change by her best friend Nikki Boyer, played by Jenny Slate.
'She was healing wounds on her deathbed,' Nikki told The New York Post in 2020. 'Her lifelong dream was to write a book and be a published author. She waited until the last few months of her life to do it. She was thinking the clearest she ever had in her life.'
Meriwether and Rosenstock also serve as showrunners and executive producers with Headland, Katherine Pope, Boyer, plus Jen Sargent, Marshall Lewy, Aaron Hart and Hernan Lopez.
Production began years ago and picked up momentum in spring 2023 before the SAG-AFTRA and WGA strikes put it on hold.
The show, which marks Michelle's return to acting following a hiatus, is her first project since she shot The Fabelmans.
It also marks Williams' return to FX, where she starred as Gwen Verdon in the limited series Fosse/Verdon (2019).
For a hotel masturbation scene, Michelle had to get creative, coming up with six different ways to climax.

Fun times: Michelle also held hands with friend Busy Philipps