The actress "feels beyond blessed" to be expecting a baby with husband Jason Goldberg

By peoplestaff225
Updated November 15, 2015 10:30 AM

Surprise! Soleil Moon Frye is pregnant again!

The actress, 39, took to Twitter on Saturday night to reveal that she is expecting her fourth child with husband Jason Goldberg.

“Excited to share some big news. Feeling beyond blessed,” she wrote alongside a photo of herself holding a positive pregnancy stick.

Frederick M. Brown/Getty

After posting the message, Frye, who is already mom to daughters Poet Sienna Rose, 10, and Jagger Joseph Blue, 7, and son Lyric Sonny Roads, 20 months, (very appropriately) attended the 2015 Baby2Baby Gala in Los Angeles where she happily told PEOPLE she felt “fantastic” at “13, 14 weeks” into her pregnancy.

“I can’t hide it anymore,” she says of deciding to share the news. “I couldn’t find a dress that could hold me together!”

Due in May, Frye admits that the news of a fourth child was a bit of a shock — and the couple is in for even more of a surprise since she and Goldberg have decided not to find out the sex of their baby on the way.

“We were so surprised by this amazing, little miracle, that I think, now, we’re just like, let’s keep the surprises going,” she shares. “This was definitely a really happy surprise. It was not something we were planning on, and yet, we could not be more excited and thrilled.”

As for the rest of her brood, the star says, “I think we were all in a state of shock, and yet, just so thrilled. The kids are over the moon about it. Poet and Jagger are ready, again. They’re like, ‘Okay, let’s go for it!’ And Lyric doesn’t quite know what’s going on. I just always tell him to kiss the belly, and he’s kissing my belly a lot. And I’m really excited for him to have a little one to play with.”

Now in her second trimester, the excited mom-to-be and her family are already thinking about life with the new baby.

“Jagger now is like, ‘Well, I’m not the middle child anymore,’ ” Frye explains. “We have [two daughters] that are so close in age. Then to have Lyric to have someone close in age, I think it will be fun.”

Plus, she adds, “We have built-in babysitters at our fingertips.”

— Michelle Ward Trainor and Reagan Alexander