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Kelly Osbourne is a mother for the first time!

The TV personality has welcomed her son with musician boyfriend Sid Wilson, her mother Sharon Osbourne revealed. The proud grandmother also shared the baby boy's name, Sidney.

Sharon confirmed the good news on "The Talk UK" after one of her colleagues mentioned that Kelly recently had a baby. 

When asked how her daughter is doing, Sharon replied, "So great, so great. She won't let a picture go out of him. No, and I'm so proud of her."

Kelly Osbourne revealed she was pregnant last May.

Kelly Osbourne with a short purple bob and deep V-neck black dress smiles for a photo with her mother Sharon in a black gown with a mesh top

Sharon Osbourne, right, revealed how her daughter, left, and new grandson are doing. (Michael Kovac/Getty Images for EJAF)

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"I know that I have been very quiet these past few months so I thought I would share with you all as to why," she wrote on Instagram. "I am over the moon to announce that I am going to be a Mumma. To say that I am happy does not quite cut it. I am ecstatic," she shared alongside a photo of her sonogram.

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This is not the first grandchild for Sharon, but rather her fifth. She shares son Jack and daughters Kelly and Aimee with rocker husband Ozzy Osbourne.

Kelly Osbourne in a white long blouse with her light purple hair tied up in a ponytail and bow

Kelly Osbourne welcomed her first child, Sidney, with her boyfriend Sid Wilson. (Gregg DeGuire/FilmMagic)

Speaking of her role as a grandmother, Sharon opened up about the times when she is allowed to take care of her grandchildren.

"When my son lets me, he doesn't let me do it too much, 'cause I spoil the kids too much," she said of Jack. 'And then he has to deal with them when I drop them off."

Jack is the father to Pearl, 10, Andy, 6, Minnie, 4 and Maple, born in July.

Jack Osbourne in a blue patterned shirt, baseball hat, carrying two drinks one on top of the other

Jack Osbourne has four children. (Hollywood To You/Star Max/GC Images)

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