Jackie 'O' Henderson shows off her trimmed down figure in $12,000 designer ensemble as she heads out to party in Rose Bay

Jackie 'O' Henderson has been making the most of her slimmed down figure.

The radio queen has lately been adorned with an array of high end designer outfits and Friday was no exception.

The 49-year-old stepped out in Rose Bay on her way to a night of partying with her good pal Pip Edwards while dressed head-to-toe in a pricey ensemble.

Jackie had on the cotton bomber jacket from Prada which is valued at a whopping $6600.

She added the Gabardine miniskirt from the Italian fashion house, which rings up at $2,650.

The media personality added to the look with a pair of tan and white leather loafers, also from Prada, valued at $1,830.

The blonde kept the funds rolling when she invested in her $895 Bottega Veneta aviator sunglasses, bringing her outfit total to a few bucks shy of $12,000.

Jackie has been loving the designer threads of late.

She recently visited New York, where she hit hot nightclub The Box, posing for sultry selfies in a $2,950 designer Prada mini frock, called the Sleeveless Re-Nylon dress.

Jackie, who has shed a whopping 18kg in the space of less than a year, looked like a supermodel following the slim down, her KISS FM co-star Kyle Sandilands recently told Stellar Magazine.

'Last year, she left to go on holidays looking like Roseanne Barr and came back looking like Elle Macpherson . That was the biggest surprise of my life,' he said.

'Even seeing my child being pulled out of my wife's stomach was not as surprising as Jackie walking back through in a size-six dress. I nearly died.'

Jackie recently admitted the exact amount she weighed before deciding to embark on her weight loss journey.

She made the confession during the Kyle And Jackie O Show after the radio program welcomed a caller on-air who weighed 85kg.

Curious newsreader Brooklyn Ross turned to Jackie and asked her, 'Do you know what the biggest [you weighed] was?'

'The biggest was 80', she replied.

Jackie's admission comes after she was once forced to deny that Ozempic is behind her spectacular slim down.

Ozempic, an appetite suppressant previously used to treat Diabetes type II, has seen an increase in prescriptions for obesity in recent years and is now used by many celebrities to keep a trim figure.

Jackie has always insisted she achieved her weight loss by going on WW (Weight Watchers), which she was an official ambassador for .

But speculation kicked off again after WW, under the leadership of CEO Sima Sistani, has started to embrace semaglutide drugs like Ozempic.

Reacting to the news on the The Kyle and Jackie O Show, Jackie exclaimed, 'That makes it look like I was definitely on Ozempic!'

She jokingly added, 'I was like a guinea pig in that experiment.'

Newsreader Brooklyn Ross then asked Jackie if she was 'annoyed' she had to lose weight 'the hard way' instead of just using a semaglutide for a quick fix.

'I mean, they make a good point and I'm really impressed that they're with the times,' she said.

'You see so many people doing it and being successful and it not really being that hard for them.'