LOS ANGELES, CALIFORNIA: Kelly Osbourne is elated to celebrate a very special occasion with her little one.

The daughter of Ozzy and Sharon Osbourne posted an adorable photo of 12-month-old Sidney showcasing his first tooth on Friday, November 24, following her second Thanksgiving celebration as a mom.

In the caption, Kelly expressed her excitement, saying, "We got a tooth 🦷." The accompanying picture captured the 39-year-old television personality smiling as she held Sidney, her child with Slipknot rocker Sid Wilson. During a walk in the sunshine, Sidney proudly flaunted his new tooth.

Sharon Osbourne also seemed to be a proud granny as she reposted Kelly's photo of Sidney on her Instagram Story, reported People Magazine.

Kelly celebrated her son's first birthday earlier this month

Kelly's recent post follows her celebration of her son's first birthday with a spooky-themed party earlier this month.

In a reflective post at the time, she captioned, "This past year has been the most magical year of my life for one reason. That reason is you, baby Sidney. To watch you grow, learn, and become a little man is the greatest joy I have ever felt."

"The most magical bond I have ever experienced is the bond I feel with you. Before you, love was just a word that I thought I understood. NOW I truly understand what love is," she continued.

"I am forever indebted to you for teaching me the beauty, meaning, and truth of love. What more can I say other than I love you."

"Happy birthday sweet [prince]. We made it on our first trip around the sun together," she added.

The former 'Fashion Police' host also posted glimpses from Sidney's birthday party, a celebration attended by her close ones.

The black-and-white tiered cake was adorned with adorable ghosts, and the kids enjoyed a padded outdoor area equipped with various drums and toys for a variety of fun activities.

Kelly also shared her son's personality on 'The Osbournes' podcast

During the first episode of the second season of 'The Osbournes' podcast in September, Kelly expressed joy in celebrating her little boy's emerging personality.

"He's gonna be such a naughty little boy," Osbourne exclaimed, delighted. "He's funny. It's weird to me how I look at him, and he's like 18 weeks old, and he does things that are just really funny."

She also expressed happiness in sharing that Sid "loves his nana" Sharon, 70. "He goes and sees nana every morning and every night before bed, and he just sits there laughing and chuckling."

"I do silly voices for him and he just loves it," Sharon explained. "He's very smiley with me."