Former E.R. star Julianna Margulies and her lawyer husband Keith Lieberthal welcomed a baby boy, according to the couple’s family.

“Obviously I’m utterly delighted to be a grandfather,” said Keith’s father, Dr. Kenneth Lieberthal, when reached by People. “I have to say, he is cuter than any other baby I’ve seen.”

Margulies’s mother, Francesca, was coy when asked about her daughter’s new son, telling People, “I better not open my mouth. I don’t want to get in trouble with my daughter.”

However, on her outgoing voicemail message, amid background violin music, Francesca announces, “A beautiful baby boy has been born to us. All is well. His name is Kieran Lindsay Lieberthal. Is that poetry? Do a little dance. Love this day! All is well. God bless! Can’t wait to hear from you.”

Margulies, 41, and Lieberthal, 35, were married in November in Lennox, Mass. She had told People earlier that she was “doing great” with her pregnancy. This is the couple’s first child.

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