EXCLUSIVE: Ozzy Osbourne's Alleged Affair Has Been 'Hard on the Family, Especially Kelly'

The fallout from Ozzy Osbourne's alleged affair with a hairstylist continues.

A source close to the family tells ET that the 67-year-old Black Sabbath rocker had an affair with 45-year-old hairstylist Michelle Pugh, and the news has been difficult for the close-knit Osbourne family. ET confirmed that Sharon and Ozzy decided to split after 33 years of marriage on Saturday.

"This has been particularly hard on the family, especially Kelly," the source says, referring to the estranged couple's 31-year-old daughter.

WATCH: Sharon Osbourne Skips 'The Talk' as Ozzy's Alleged Affair Goes Public

There is also worry about Ozzy handling his affairs on his own.

"There are concerns that Ozzy will be lost without Sharon, because he relies on her for everything," the source adds.

Sharon and Ozzy have three kids together -- 32-year-old Aimee, Kelly, and 30-year-old Jack. It's no secret that Sharon has been instrumental in Ozzy's success, first meeting the singer in the 1970s when his band, Black Sabbath, was rising to fame, and later becoming his manager.

"She's my whole world," Ozzy said about Sharon to People in 2002, when the 63-year-old The Talk co-host was diagnosed with colorectal cancer. "She's the best lover I've ever had, the best friend I've ever had. She has been my pillar of strength for many years."

Sharon and Kelly also have a particularly close relationship. Kelly gushed about her mom to ET last May.

"My mom gave up so much for me and my brother," Kelly said. "I can't even put that into words."

"I couldn't be me without you -- and that's the truth," she added, facing her mother.

On Monday, Sharon skipped her appearance on The Talk, after letting staff know over the weekend that she would be taking a "personal day," a source tells ET. She is expected to be back on Tuesday.

WATCH: Ozzy Osbourne's Alleged Mistress, Michelle Pugh: Everything We Know About the Celebrity Hairstylist

Meanwhile, Ozzy's alleged mistress -- a colorist at the Meche Salon in Beverly Hills, California, where Sharon, Kelly and Aimee also get their hair done -- has since made her Instagram account private after the scandal broke. 

"It was known in the salon they were a little too close," a source tells ET. "Michelle is super into rock and metal music, so they bonded over that. Still, it's weird. He's nearly 70 and a client. She knows better that to do this."

Watch the video below for more on Pugh.

Who is Ozzy Osbourne's Alleged Mistress, Michelle Pugh?

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