Kate Waterhouse packs on the PDA with husband Luke Ricketson and shows off trim figure in a swimsuit

Kate Waterhouse kisses her NRL star husband Luke Ricketson as she showcases her trim figure in a black swimsuit at Balmoral Beach

Hailing from Australian racing royalty, Kate Waterhouse is known for always looking stylish trackside.

But on Monday, the journalist and TV presenter opted for a more relaxed look as she sported a simple black swimsuit at Sydney’s Balmoral Beach.

The 37-year-old was joined by her husband, retired NRL star Luke Ricketson, 47, and their daughters for the outing.

Fun in the sun: On Monday, Kate Waterhouse packed on the PDA with NRL star husband Luke Ricketson and showed off her trim figure in a swimsuit at Balmoral Beach

Kate, who is the daughter of horse trainer Gai Waterhouse, showed off her trim figure in a flattering black one piece, that featured a backless design and a plunging neckline. 

Kate worked up a sweat exercising by the beach before taking a dip, wearing goggles in the water. 

Luke, who played for the Sydney Roosters, looked fit in a colourful pair of board shorts. 

Trim and toned! Kate showed off her trim figure in a flattering black one piece, that featured a backless design and a plunging neckline

Trim and toned! Kate showed off her trim figure in a flattering black one piece, that featured a backless design and a plunging neckline

Sweet: He looked after their daughters while Kate exercised at the other end of the beach, before they met up on the sand and shared a kiss

Sweet: He looked after their daughters while Kate exercised at the other end of the beach, before they met up on the sand and shared a kiss

Sweet: He looked after their daughters while Kate exercised at the other end of the beach, before they met up on the sand and shared a kiss

Dad mode! He looked after their daughters who happily played in the sand

Dad mode! He looked after their daughters who happily played in the sand

Working up a sweat: Kate was seen exercising by the beach before taking a dip

Working up a sweat: Kate was seen exercising by the beach before taking a dip

Working up a sweat: Kate was seen exercising by the beach before taking a dip

He looked after their daughters while Kate exercised at the other end of the beach, before they met up on the sand and shared a kiss. 

The pair both looked relaxed on the outing as they lapped up the sunshine. 

In December, it was reported that the pair purchased an incredible $17.8million mansion in Sydney’s Balmoral. 

Family ties: Kate is the daughter of horse trainer Gai Waterhouse

Family ties: Kate is the daughter of horse trainer Gai Waterhouse

Life of luxury: In December, it was reported that the pair purchased an incredible $17.8million mansion in Sydney's Balmoral

Life of luxury: In December, it was reported that the pair purchased an incredible $17.8million mansion in Sydney’s Balmoral

Finishing up: Kate clutched a coffee after her workout and swim and doted on her daughters

Finishing up: Kate clutched a coffee after her workout and swim and doted on her daughters

Finishing up: Kate clutched a coffee after her workout and swim and doted on her daughters

Buying up: According to Domain, the deal was an off-market purchase by the couple from Ling Zijian

Buying up: According to Domain, the deal was an off-market purchase by the couple from Ling Zijian

According to Domain, the deal was an off-market purchase by the couple from Ling Zijian.

The former owner purchased the stunning property for $5.3million back in 2003.

The Sydney mansion features five spacious bedrooms and it has incredible views of Balmoral Beach.

Locals: The Sydney mansion features five spacious bedrooms and it has incredible views of Balmoral Beach

Locals: The Sydney mansion features five spacious bedrooms and it has incredible views of Balmoral Beach

Home sweet home: The former owner purchased the stunning property (pictured) for $5.3million back in 2003

Home sweet home: The former owner purchased the stunning property (pictured) for $5.3million back in 2003

Sports star: Luke, who played for the Sydney Roosters, looked fit in a colourful pair of board shorts

Sports star: Luke, who played for the Sydney Roosters, looked fit in a colourful pair of board shorts

The home is also located near the Lower North Shore’s most popular restaurants and eateries.

Kate’s brother Tom Waterhouse also owns a $13million beachfront house in the same suburb.  

The racing heiress and the former sports star tied the knot in Sicily, Italy, on June 28, 2012.

Popsugar reported at the time that Kate wore a Vera Wang dress and the newlyweds were surrounded by 80 guests on their big day.

The couple share two young daughters: Sophia Edie, six and Grace Gabrie, three.

Married life: The racing heiress and the former sports star tied the knot in Sicily, Italy, on June 28, 2012

Married life: The racing heiress and the former sports star tied the knot in Sicily, Italy, on June 28, 2012

Family: The couple share two young daughters: Sophia Edie, six and Grace Gabrie, three

Family: The couple share two young daughters: Sophia Edie, six and Grace Gabrie, three