The Superstore actress made the happy announcement Sunday evening on social media. “We’re welcoming one more face to kiss in 2018! Wishing you #MásBesos in the New Year!” she wrote along with a photo of her and husband Ryan Piers Williams while holding an onesie.
The news, which comes on New Year’s Eve, marks the couple’s first child. The two got married in 2011, and over the summer, celebrated 12 years together with a trip to Iceland.
The news also marks motherhood for all four of the Sisterhood of the Traveling Pants co-stars. Blake Lively and husband Ryan Reynolds have two kids, Ines and James, together. Alexis Bledel and husband, Mad Mad star Vincent Kartheiser, had a child in 2015. And Amber Tamblyn announced in February that her and David Cross gave birth to their first child, daughter Marlow Alice.