October 22, 2015 12:50 PM

John Lamparski/Wireimage

He’s here!

Daphne Oz is a new mama after welcoming a son, her second child with husband John Jovanovic, on Wednesday, Oct. 21, her rep confirms to PEOPLE.

The family’s new addition — who weighed in at 8 lbs, 6 oz., and measured 21 inches long — joins 20-month-old big sister Philomena Bijou.

“Daphne and I feel extremely blessed with our new addition to the family and Philomena is excited to bring her little brother home,” Jovanovic says in a statement.

On Wednesday, Oz revealed her baby boy’s name in an exclusive clip on The Chew. “We have named our son Jovan Jovanovic Jr. — my husband is Serbian and we named him after his daddy,” she explained. “We’re calling him John-John.”

She adds, “I’m officially a week in to being a mother of two which is still totally crazy to me to say. It’s been a wild week — it’s been so much fun and totally exhausting. Everyone’s so in love — Philo especially, she thinks he’s all hers. She’s just constantly trying to kiss him, but she’s 20 months old so her kisses are verging on assault at this point so we gotta be careful. She loves him so much, which I’m really happy about — I was really nervous about the adjustment with the two of them. It’s been a lot of me lying around being a human pacifier.”

On Thursday, Oz’s father, Dr. Mehmet Oz, took to Instagram to share the exciting news.

“Earlier today, @daphneoz blessed us with a beautiful grandson! @lisaoz and I couldn’t be happier,” he wrote alongside a photo of the new big sister.

“Philo wants to know what all the commotion is about — I think she’s realizing that her lifelong best friend was just born. We thank you all for your well-wishes and prayers.”

Oz’s co-hosts first announced the birth Thursday on Twitter.

“Congratulations, Daphne! We are all so happy for you. And we cannot wait to meet the new little man. Send our love to Philo and to John — and send us lots of photos! We miss you and we love you,” Carla Hall, Mario Batali, Michael Symon, and Clinton Kelly say in a short clip.

The Chew co-host announced her pregnancy during a special segment on the show in April.

“This may or may not be something you know about me,” she teased, before holding up a sign that read, “I’m pregnant.”

Oz later revealed the baby on the way was a boy. “Philo practicing for her little BROTHER!! We’re so excited,” she wrote along with a photo of her toddler pushing a doll stroller.

After welcoming her daughter in 2014, Oz admitted that she wasn’t prepared for all the surprises that motherhood entailed, including her body’s inability to immediately bounce back.

“You still look six months pregnant,” she told Fitness magazine of her postpartum figure. “I thought I knew where I’d be when I went for my first doctor appointment a few weeks after giving birth. I’d lost only 10 pounds!”

But the mom-to-be has been happily showing off her growing baby belly on Instagram, sharing snaps of her wearing everything from little black dresses to bikinis.

“Abs for DAYZZZZZ. (and my belly button seems to have gotten lost, in case you find it lying around somewhere),” she captioned a shot of her snapping a selfie.

— Anya Leon with reporting by Sonal Dutt

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