Kourtney Kardashian and Hayden Panettiere give birth: What are the baby names?

Dec 15, 2014 at 3:00 p.m. ET
Image: WENN

It was a big weekend for celebrity babies, as both Kourtney Kardashian and Hayden Panettiere gave birth. What are the baby names? Get all the details on Kourtney's baby boy and Hayden's baby girl, including which celebrity mom welcomed her baby on a very special day.

The Kardashian clan had two reasons to celebrate on Sunday, Dec. 14, as Kourtney gave birth to her third child, a baby boy, on her son Mason's 5th birthday.

"The family is freaking out with joy," a family insider told E! News. "What an amazing coincidence."

Kourtney and boyfriend Scott Disick, who also have a 2-year-old daughter named Penelope, had said they were due around Christmas, but no one was expecting her to be celebrating a double birthday.

What did they name the tiny tot? Kourtney had previously revealed she was "stuck" picking out names and was planning to wait until she saw the baby before making a final decision. However, inside sources told Hollywoodlife.com that they planned on a name to honor both her father, Robert, and Disick's father, Jeffrey.

"They really want to honor their fathers and have talked very strongly on Jeffrey Robert. That would be the order the name would be presented," the source revealed.

I love the names Mason and Penelope and can't wait to hear the name they picked.

Stay tuned on this one. In other baby news, Hayden Panettiere welcomed her first baby.

Hayden Panettiere baby name news

Image: Apega/WENN.com

Panettiere gave birth on Tuesday, Dec. 9, but waited until this weekend to announce the news. The Nashville star, who is engaged to Ukrainian heavyweight boxer Wladimir Klitschko, gave her daughter the unique name of Kaya Evdokia Klitschko.

The healthy baby girl, who is the first child for the Nashville star, weighed 7 pounds, 14 ounces and was 20 inches in length.

"We are over the moon and madly in love!" the couple tells People.com.

What is the meaning behind the name Kaya? The unique name is Japanese in origin and means "a place of resting." The name peaked in popularity in 2003-2004, when it ranked number 540 on the Social Security Administration's list of the top 1,000 baby names. However, it has since fallen to number 757.

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