The Osbourne clan is expanding!

Kelly Osbourne announced on Thursday that she and boyfriend Sid Wilson are expecting their first child.

“I know I’ve been very quiet these past few months, so I thought I’d share with you all why,” the 37-year-old former “Osbournes” star captioned an ultrasound photo on Instagram.

“I am overjoyed to announce that I am going to be a Mumma,” she continued. To say I am content is an understatement. “I am overjoyed!”

The sweet Instagram post came nearly three months after Osbourne revealed her relationship with the DJ.

“I can’t believe where we’ve ended up after 23 years of friendship,” the “Fashion Police” alum wrote alongside a February Instagram photo. “You are my best friend, my soulmate, and I adore you, Sidney George Wilson”

The duo’s loved ones sent their congratulations to the future parents after Thursday’s reveal.

“Congratulations, love!” Jesse Tyler Ferguson remarked, and Audrina Patridge added, “Congratulations Kelly!!!!!! I’m so happy for you; you’re going to be such a wonderful mother.”

The Slipknot frontman, 45, has yet to share the news on his personal Instagram account.

“CoOsbourne is not the only member of her famous family who is expecting a child this year.

Her brother, Jack Osbourne, announced on Instagram in March that he and fiancée Aree Gearhart are expecting their first child together. (Jack, 36, already has three children with ex-wife Lisa Stelly: Pearl, 10, Andy, 6, and Minnie, 4.)

“Exciting news,” Jack captioned the 31-year-old interior designer’s Instagram debut of her baby bump. “@seecreature and I are expecting our first child this summer!” “Baby No. 4 is on the way!”

Kelly appeared to be pregnant at the time, writing, “There is no one more excited for this baby and you know why!!!!!!!!”

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