NEED TO KNOW
Allison Williams opens up about motherhood in an exclusive interview with PEOPLE
The actress shares her 4-year-old son Arlo with her husband, Alexander Dreymon
“We are having so much fun raising this guy. He is awesome. I feel really lucky,” Williams says
Allison Williams is a proud mama!
“I love being Arlo’s mom,” the actress, 38, tells PEOPLE in an exclusive interview, referring to her 4-year-old son she shares with her husband, Alexander Dreymon.
“We are having so much fun raising this guy. He is awesome. I feel really lucky,” continues Williams.
According to the Girls alum, “Our little trio is super, super close. We cherish all of our time together.”
“It’s such an honor to have this little thing, and then you watch it become who it is today,” explains Williams. “And when you look back at pictures of your newborn, you see your current day child just trapped in this tiny little body, who can’t talk to you yet or move around the way it wants to move around, and then they just sort of unfurl themselves as time goes on.”
Allison Williams (left) and Alexander Dreymon (right) in Los Angeles in October 2025.
Credit: Steve Granitz/FilmMagic
Williams and Dreymon, 43, met on the set of Horizon Line, where they played a couple who must navigate the aftermath of their airline pilot suffering a fatal heart attack mid-flight.
Their on-set chemistry translated off-screen, and Williams and Dreymon started dating at the end of 2019.
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In November 2021, the pair secretly welcomed Arlo via emergency C-section, though the news of their son’s birth wasn’t revealed until April 2022.
PEOPLE later confirmed in June 2025 that Williams and Dreymon quietly tied the knot. The news came after the Girls alum referred to Dreymon as her “husband” in an interview with The Guardian.
As for what excites her most about being a mom at this stage, Williams — who has partnered with Sanofi and Regeneron for a campaign promoting Dupixent — tells PEOPLE, “Everything. Honestly, everything.”
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