The New Girl star is engaged to 42-year-old producer Jacob Pechenik, her rep has confirmed to PEOPLE.
The couple, who have been dating since mid-2014, are also expecting their first child together.
"Jacob and I are over the moon," the 35-year-old mom-to-be told PEOPLE earlier this month. "We are so excited to meet our little one."
The baby is due this summer.
In a happy twist of fate, Zooey's sister, Emily Deschanel, is also expecting a baby. It's her second child with husband David Hornsby.
Reporting by KATE STROUP