PR queen Roxy Jacenko has taken to social media to show off her slender figure.

The 44-year-old mother-of-two, who recently shed 18kg, made the cheeky post on Tuesday, in which she can been seen flaunting her cleavage in a racy pose.

Wearing jeans and a loose white shirt she tied in a bow at her waist, the selfie shows Roxy opening her top to reveal a lacy underwire bra and a distinct tan line on her bust, seemingly acquired on her trip to Bali.

Also included in the Instagram post, which appears to be a promotion for lingerie brand Léays Australia, was the caption 'Influenced'. 

Followers commented with their enthusiastic approval for the sexy selfie.

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'This is so feminine and beautiful. Just stunning,' gushed one fan, while another user added, 'Love that your bra is visible Roxy.'

However, one fan expressed disappointment with the pose, messaging, 'What a shame there is a tan line.'  

It comes after Jacenko has endorsed a new supplement which she has called a 'natural Ozempic'.

She celebrated the wellness brand Eimele new weight loss supplement at a lunch at Little Felix restaurant in Sydney last month.

Roxy gave an insight into her daily ritual and 18kg weight loss over the intimate lunch with friends.

According to the website, Eimele provides 'plant-powered solutions' for a variety of concerns, including weight management.

The brand's Calibrate Reds Max is said to help 'limit sugar and carb absorption' while simultaneously 'reducing fat storage'.

The powder sachets are designed to be taken dissolved in water at the start or during the biggest meal of the day.

During the soiree, Roxy showed off her slender figure in a $899 mini dress from Leo Lin.

The stunning strapless frock featured large embroidered flowers on the front and revealed a hint of her cleavage and slim pins.

The savvy businesswoman had her signature blonde locks coiffed in waves, along with a bronze makeup look that highlighted her youthful visage.

Of course, Roxy was dripping in diamonds, including a sparkling tennis necklace and large diamond pendant.

Roxy previously revealed the extreme measures she goes to in order to maintain her goal weight of just 50.9kg.

Roxy also recently spoke about the terrifying moment she overdosed on Ozempic in an effort to lose weight.

She revealed she'd taken four times the recommended dosage before she suffered from severe vomiting and non-stop shaking.

Roxy also previously said she thought she was going to 'die' after taking one milligram of the diabetic treatment, which was four times the amount prescribed to her by a doctor.

'I thought I was actually going to die. I have had cancer, radiation therapy, all of that. It doesn't even compare to how bad I felt when I took this drug,' she told The Saturday Telegraph.

'For the first 12 hours I was OK. I vomited four times that morning, once in a hire car, and I went to work.'

Roxy revealed she then suffered from severe vomiting and non-stop 'epilepsy type' shaking which landed her in a drug overdose clinic for three days.