Kelly Osbourne “hid” while pregnant with her baby boy because she didn’t want to face the criticism that she knew would come.

When asked whether she used a surrogate by an Instagram user who “never saw a pregnant picture of” the former reality star, Osbourne set the record straight.

“There are no pictures of me pregnant because I hid for 9 months because I did not want to get fat shamed,” the former reality star, who only showed off her baby bump once while expecting, replied on Tuesday.

She also denied getting plastic surgery on her face and neck and credited weight loss for her altered appearance.

“Honestly I’ve only had Botox,” she explained.

The dialogue was sparked when Osbourne posted a photo of herself rocking a bedazzled black dress and matching hair bow on the “Masked Singer” set.

While Paris Hilton gushed that Osbourne looked “gorgeous,” many of the “Fashion Police” alum’s Instagram followers focused on her slimmed-down figure.

When one asked what the Brit’s “secret” was, she wrote, “I had weight loss surgery a few years ago and it completely changed everything.

“A lot of people don’t like that I did it but it was one of the best decisions I have ever made,” Osbourne — who had gastric sleeve surgery done in 2018 — continued.

Just as she hid her pregnancy progress from cameras, Osbourne has kept her son, Sidney, out of the spotlight since he was born late last year.

The new mom even shaded her own mother, Sharon Osbourne, for gushing about the infant on “The Talk UK” in January before Kelly was “ready” to share him “with the world.”

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In November, Page Six broke the news that Kelly — who shares the child with Slipknot DJ Sid Wilson — was in the hospital and ready to give birth.

While the “Dancing With the Stars” alum keeps fairly quiet about motherhood, she has spoken candidly about her weight over the years — as has Sharon, 70.

On Sunday, the ousted host of “The Talk” Told Bill Maher’s “Club Random” podcast listeners that she chose to “play … the odds” with Ozempic because she has “always had a weight problem.”

“The first few weeks was f–king s–t because you just throw up all the time. You feel so nauseous,” she recalled, noting that she felt “fine” after a couple weeks.

Sharon, who first spoke about using the drug to lose 30 pounds in May, is now off of Semaglutide.