Los Angeles, California - The Big Bang Theory actor Kaley Cuoco and her boyfriend, Ozark actor Tom Pelphrey, shared they are expecting their first child.

"Baby Girl Pelphrey is due in 2023," Cuoco announced in an Instagram post on Tuesday.

"Beyond blessed and over the moon," the 36-year-old wrote.

The announcement included a photo dump of the couple celebrating their little one on the way, including the star's growing baby bump, a cake with pink filling, outfits of baby onesies, and a pregnancy test.

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Pelphrey also posted several of the snaps on his own account, captioning the shots, "And then it was even MORE BETTER. Love you more than ever @kaleycuoco."

Cuoco and Pelphrey met in April at the premiere of the new Ozark season and debuted as a couple on Instagram in May. They walked the red carpet together at the Emmy Awards in September.

A year ago, Cuoco announced the breakup of her marriage to Karl Cook. The actor wed the horse trainer in June 2018. Before that, she was married to tennis player Ryan Sweeting for two years.

Cuoco rose to fame on the series The Big Bang Theory playing beloved waitress Penny. The award-winning sitcom came to an end in 2019 after twelve years and 279 episodes.