There’s someFantasticnews surroundingKatherine Waterston— she’s pregnant!
Wearing her dark hair tied back, the mom-to-be opted for a gold CALVIN KLEIN 205W39NYC dress with long sleeves that hugged her midsection, completing the glam look in silver heels.
A rep for Waterston didn’t immediately return PEOPLE’s request for comment.
Katherine Waterston.Mike Marsland/WireImage

Mike Marsland/WireImage

Waterston — known for her role as Porpentina “Tina” Goldstein in theHarry Potterspin-off film and its 2016 predecessor,Fantastic Beasts and Where to Find Them—is private when it comes to her personal life.
She is the daughter of Sam Waterston, the actor known for his role as Jack McCoy onLaw & Orderwho was also nominated for an Oscar for his turn as Sydney Schanberg in the 1984 filmThe Killing Fields.
Cast and crew ofFantastic Beasts and Where to Find Them.Marion Curtis/Starpix

Waterston is also recognizable for her roles inMichael Clayton,Steve Jobs,Logan LuckyandAlien: Covenant. She appeared in five episodes ofBoardwalk Empire, as Emma Harrow.
Fantastic Beasts: The Crimes of Grindelwald —also starringEddie Redmayne,Jude Law,Johnny Depp,Alison Sudol,Ezra Miller,Dan FoglerandZoë Kravitz— hits theaters Friday.
source: people.com