Jessica Mauboy looks effortlessly chic in a blue suit before taking to the stage for high-energy performance at the TAB Eureka

Jessica Mauboy showed off her incredible sense of style as she sported two chic ensembles while stepping out at the TAB Eureka in Sydney on Saturday.

The Australian singer, 35, turned heads in an elegant suit before she slipped into an edgy all-black ensemble to perform for the crowds at the Club Menangle.

For her first look, Jessica oozed sophistication in a smart blue suit, made up of a fitted blazer with padded shoulders and wide leg trousers.

She added to her frame with a pair of pointed white buckle heels and added a pop of colour with a statement red headband.

Jessica appeared to be in jovial spirits as she arrived at the world's richest harness horse race, which features a huge $2.1million in prize money.

Later taking to the stage for her live show, Jessica changed into a stylish black leather-look dress as she made sure to capture attention.

She put on a high-energy performance for the eager crowds as she pulled out all the stops to nail her race day entertainment.

Also in attendance at the glitzy event was Love Island Australia star Courtney Stubbs, who put on a leggy display in a black off-the-shoulder mini dress.

She gave herself a few extra inches in a pair of black heels and toted her essentials in a small black handbag to complete her look.

Courtney accessorised with a statement pendant necklace and added to her stunning features with a bronzed make-up palette.

She was joined at the lavish affair by the likes of Fox Sport presenter Jemma Barge, model Helena Ristevski and influencer Lyndsay Gates, among others.

The TAB Eureka race, which is in its second year, showcases the top few Australian-bred Standardbred pacers as they compete in a 2300m slot race. 

Jessica's performance at the event comes after it was revealed why she and her fellow The Voice judges Rita Ora and Jason Derulo have not returned to the show.

The high-profile trio were replaced on the 2024 series by newcomers LeAnn Rimes, 41, Kate Miller Heidke, 42, and Adam Lambert, 42.

The only returning judge from the previous year is veteran Guy Sebastian, 42, amid a huge panel shake-up on the talent competition.

And, according to a production insider, the reason for the switch-up was the former judges' pay cheques and a desire from producers to keep costs down.

'The decision was made last year and the casting team were looking for quite some time, the insider told Yahoo Lifestyle. 

The insider added that salary increases are necessary to keep returning stars on the show and the price tag for the former crop was 'too expensive'. 

'The company line was that Jessica, Rita and Jason were all too busy, but I don't think anyone is too busy to pick up these sorts of pay cheques,' they went on.

'It certainly did have a lot to do with keeping the costs down.'

The insider claimed they were 'nervous' about the new line-up as they reflected of the importance of replacing Keith Urban with the right personality back in 2022. 

'Jason was a big risk in 2023 and Channel Seven knew that if he worked on the show his management was going to ask for a much higher figure to come back this year, which in the end was obviously too expensive,' the source told the publication.

It was also claimed Rita felt she had 'exceeded' what she could bring to the show and did not want to return without a pay rise, especially with Guy receiving top billing.

Similarly, the insider claimed Jessica was asking for equal pay with Guy, which 'could' have been the reason she left the show. 

Jessica joined the show as a judge back in 2021 and served for two years before her shock exit alongside her co-stars.