John Shearer / Invision/AP 1 / 9
John Shearer / Invision/AP 1 / 9

The color of the nursery will be… Your guess is as good as Zooey Deschanel's!

The pregnant "New Girl" actress said she and her fiancé Jacob Pechenik have decided not to find out the gender of their baby ahead of time.

"We are going to be surprised. It's more fun, you know? Make it into a game," she told Jimmy Kimmel on March 26, adding that she often goes back and forth about what sex she thinks the baby will be.

RELATED: Did InStyle turn Zooey into Jared Leto?

It's a challenge, though, to keep all the medical professionals mum.

"You're like, 'Don't tell me, don't tell me!' The last time the technician was like, 'Just so you know, I always use the pronoun he — it's just my habit.'" she said on the late night show. "[The technician] set it up because we were paranoid… Most people want to find out!"

RELATED: Stars having fun on the set

The only downfall of pregnancy, in Zooey's eyes, is that a lot of things she likes are forbidden.

RELATED: Celebs in Oscar de la Renta gowns

"You can't have sushi. You can't have cheese that tastes good," she said. "You can have a little bit [of coffee] but I would have four cups a day and now I can have half a cup, which is a joke. It's a total joke! No alcohol, I miss that - I like wine."

Soon enough, though, she'll be surrounded by whining and wine.