Kelly Osbourne says she's 'not ready to share' newborn son after Sharon Osbourne reveals birth

Sharon Osbourne is spilling the beans on Kelly Osbourne's first child with boyfriend Sid Wilson.

The 70-year-old revealed that her daughter quietly welcomed a baby boy during an appearance on Britain’s “The Talk” Tuesday, saying the new parents are doing "so great."

“She won’t let a picture go out of him, and I’m so proud of her,” Osbourne said of her daughter, 38, and new grandson named Sidney.

The new baby makes five grandchildren for Sharon and her husband, Ozzy Osbourne .

More: Kelly Osbourne announces she's expecting a baby: 'I am going to be a Mumma'

On Wednesday, Kelly Osbourne acknowledged her son's arrival on her Instagram story, writing, "I am not ready to share him with the world."

She added: "It's no one's place but mine to share any information on my baby."

Last May, Kelly Osbourne shared publicly she was pregnant with photos of herself holding ultrasound photos.

"I am over the moon to announce that I am going to be a Mumma," she captioned the post with pregnancy and heart emojis. "To say that I am happy does not quite cut it. I am ecstatic!"

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Sharon Osbourne addresses her recent health scare

During the nearly hour-long talk show, Sharon Osbourne also addressed her health scare last month.

Osbourne said she has been on the mend following an injury that led to a hospitalization.

"It's so great to be back in the UK...I've been very good," she said, adding holidays were "quiet."

When a co-host asked Osbourne to explain the medical emergency, she could not explain what happened.

"I wish I could but I can't. It was the weirdest thing," she replied. "I was doing some filming and … suddenly they tell me that I (passed out) for 20 minutes."

She said she visited at least three hospitals and "did every test" over a period of two days but "nobody knows why."

Previously: Sharon Osbourne says she's 'doing great' since returning home from hospital

Osbourne suffered an injury in December when she was at an inn near Ventura, California.

The Ventura County Fire Department confirmed to USA TODAY that it responded to an emergency at the Glen Tavern Inn at 6:30 p.m. local time in Santa Paula, California, and took a patient less than a mile away to the Santa Paula Hospital on Friday.

On Dec. 20, Jack Osbourne shared on his Instagram story that his mother was discharged. "She has been given the all clear from her medical team and is now home," he wrote. "Thank you to everyone who reached out with love and support."

"As to what happened to mum – I'm gonna leave it to her to share about when she is ready," Jack added.

Contributing: Elise Brisco, Naledi Ushe

Natalie Neysa Alund covers trending news for USA TODAY. Reach her at nalund@usatoday.com and follow her on Twitter @nataliealund.

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This article originally appeared on USA TODAY: Kelly Osbourne isn't 'ready to share' son after her mom reveals birth