The 39 year old took to Twitter.com to announce the news on Saturday night (14Nov15).

"Excited to share some big news. Feeling beyond blessed. #ClearblueConfirmed #growingfamily @Clearblue #ad #grateful," she wrote alongside a photo of herself holding a positive pregnancy stick.

Frye and her producer husband Jason Goldberg are already parents to daughters Jagger Joseph Blue, 10, Poet Sienna, seven, and 20-month-old son Lyric Sonny Rhodes, 20 months.

At the 2015 Baby2Baby Gala in Los Angeles on Saturday night, she told People.com she was "13, 14 weeks" into her latest pregnancy, adding she didn't have much choice but to tweet the news: "I can’t hide it anymore! I’m like, 'I couldn’t find a dress that could hold me together!'"