Kelly Osbourne – who turns 40 this year – shows off her toned tummy in a bikini while enjoying a dip in her swimming pool with son Sidney

Kelly Osbourne showed off her svelte figure in a sweet photo with her son Friday.

The former reality star, who was once told she was ‘too fat for TV’  looked much younger than her 39 years.

The Austin Powers in Goldmember actress wore a multi-toned bikini with a halter top to flaunt her taut tummy.

The 7D voice actress covered up in the bright Los Angeles sunshine wearing a wide brimmed black hat and large black framed sunglasses, and she appeared to be wearing minimal makeup.

Her baby, Sidney, 18 months, looked adorable as he sat in his flotation device wearing a turquoise rash guard and a white sun hat.

Osbourne shares the tyke with her partner, musician Sid Wilson, 47. 

The Osbournes Podcast host lost 85 pounds after giving birth to Sidney in 2022 following a diagnosis of gestational diabetes during her pregnancy. 

‘I was at a higher risk of actually getting diabetes, which I did not want,’ she explained to Extra in April.

Although she had undergone surgery for a gastric sleeve in 2020, the So Undercover actress said this time, ‘I cut out sugar and carbohydrates and I rapidly lost weight.’ 

In an interview with People, she denied using Ozempic, the drug responsible for her mom Sharon’s dramatic weight loss, but also admitted she turned to supplements including, ‘peptides’ and ‘vitamins’ to drop the weight, but did not go into specifics about which products she used.

Peptides for weight loss include Semaglutide, the main element in Ozempic and its sister product, Wegovy, which help curb food cravings.

In some studies, the medication has also curbed cravings for alcohol.

Liraglutide, known under the brand name Saxenda, is a peptide that reduces appetite and Tirzepatide, known as Mounjaro, has been successful in treating both diabetes and obesity according to Healthline. 

Osbourne shares Sidney with her partner, musician Sid Wilson, 47

The Osbournes Podcast host lost 85 pounds after giving birth to Sidney in 2022 following a diagnosis of gestational diabetes during her pregnancy. ‘I was at a higher risk of actually getting diabetes, which I did not want,’ she explained to Extra in April

The reality star has denied using Ozempic, the drug responsible for her mom Sharon’s dramatic weight loss, but admitted using ‘peptides’ and ‘vitamins’ to drop the weight, and device called EmSculpt to tighten up loose skin      (Pictured in Los Angeles May 9)

 Osbourne’s pregnancy also left her with some sagging skin, for which she turned to a procedure called EmSculpt to tighten up her abs.

In a demonstration video on social media she said, ‘it’s going to give me like 20,000 crunches in 30 minutes.’

The former Fashion Police host said she has also turned to a similar product, EmFace, to tighten up ‘the skin under my chin’ and to ‘give me a lift’

Osbourne has a partnership with the company.