Kaley Cuoco welcomes baby girl with Tom Pelphrey: 'The new light of our lives'

Kaley Cuoco has joined the mom club!

Over the weekend, "The Big Bang Theory" alum, 37, announced that she welcomed her first child with Tom Pelphrey on March 30.

"Introducing, Matilda Carmine Richie Pelphrey, the new light of our lives," Cuoco captioned a carousel of photos of the adorable newborn and their family of three. "We are overjoyed and grateful for this little miracle."

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Cuoco, who stars in "The Flight Attendant" on HBO Max, went on to thank her family, friends and the medical staff, whom she said helped "immensely."

"We are blessed beyond belief," she continued, before closing with a sweet note to Pelphrey. "@tommypelphrey didn't think I could fall even more in love with you, but I did."

Pelphrey also shared a post on his account announcing their daughter's arrival.

"My heart is full of love and gratitude for this miracle…." he wrote. "Eternally grateful for the strength and bravery of my soulmate and best friend @kaleycuoco. You are incredible. 💪♥️"

Cuoco revealed she was expecting in October, sharing an Instagram post featuring photos of herself and Pelphrey, who starred on "Ozark" and "Iron Fist."

"Baby girl Pelphrey coming 2023," she wrote at the time. "Beyond blessed and over the moon."

Cuoco began dating Pelphrey after filing for divorce from equestrian Karl Cook in 2021. She was previously married to tennis pro Ryan Sweeting from 2013 to 2016.