Alessandra Ambrosio shares a sweet kiss with new boyfriend Buck Palmer as they soak up the sun in Brazil

She confirmed their relationship with some PDA earlier this month. 

And Alessandra Ambrosio wasn't holding back on her affections on Friday when she shared a sweet photo of herself and her new boyfriend Buck Palmer kissing.

The 43-year-old Victoria's Secret model puckered up for a cute smooch from the Australian jewelry designer as they stood on a beach in her home country of Brazil.

The lovebirds, who appear to have been dating for some time under the radar before taking their romance public, both looked as if they'd been getting plenty of sun, and Buck even looked a bit toasty.

Alessandra revealed she was wearing a textured white top with thin straps decorated with chunky green and gold beads.

She had her brunette tresses swept back in wet strands, and she wore a cool pair of classic aviator sunglasses to block out the piercing light.

Alessandra Ambrosio, 43, looked totally loved up as she shared a smooch with her new boyfriend Buck Palmer in a photo posted to Instagram on Friday from Brazil

Alessandra Ambrosio, 43, looked totally loved up as she shared a smooch with her new boyfriend Buck Palmer in a photo posted to Instagram on Friday from Brazil

Buck went shirtless, showing off his chiseled physique while wearing swim trunks, and he accessorized with chunky black sunglasses and added a green cap for a splash of color.

The hat, which runs for about $50 from Good Quality Human, read 'Mi Casa, Su Casa' on the front, which was broken up by a large 'LA' design.

The colors perfectly matched the Brazilian flag, which fluttered in the breeze above Alessandra and Buck's heads. 

She let the loved-up photo do the talking and simply captioned her post with green, yellow and blue heart emojis.

According to her tagged location, the couple were enjoying the day at the popular beach Praia Brava, which is located on the north end of the large Santa Catarina Island, which is home to the state's capital city, Florianópolis.

She later paid tribute to the city by naming her beachwear brand GAL Floripa, using a nickname for the capital. 

Buck has a surprising connection to Alessandra as he's the ex-husband of Ashley Hart, the sister of Alessandra's fellow Victoria Secret model Jessica Hart.

Their Instagram kiss was a rare public display of affection for the couple, who have kept their romance relatively private and under wraps until now.

The Victoria's Secret model wore a textured white top with thin beaded straps and aviator sunglasses. Buck, an Australian jewelry designer, rocked a green Good Quality Human hat and went shirtless

The Victoria's Secret model wore a textured white top with thin beaded straps and aviator sunglasses. Buck, an Australian jewelry designer, rocked a green Good Quality Human hat and went shirtless

The two have kept their relationship under the radar and only confirmed it with some PDA earlier in December

The two have kept their relationship under the radar and only confirmed it with some PDA earlier in December 

Though they only went public with their relationship earlier this month, it appears the couple have been dating for quite some time if Alessandra's post is anything to go by.

Alessandra and Buck officially unveiled their romance when they were seen walking hand-in-hand together after attending a party at Art Basel in Miami, Florida

Alessandra had previously been featured with Buck in photographs shared to Instagram of them having fun at the beach during a trip to the island of Kauai in Hawaii.

In the shots, the pair looked comfortable in each other's company and Alessandra tagged Buck in the post as she hinted at their relationship.

She also shared a snap of herself kissing Buck on the cheek as they went Instagram official before their first public outing as a couple. 

Alessandra has rubbed shoulders with the Australian model Jessica Hart over the years, having both risen to fame as Victoria's Secret models in the 2000s. 

Buck and Jessica's sister Ashley went their separate ways after just two years of marriage in 2017, with the model candidly discussing their decision to separate in 2019.

Speaking to Women's Health, Ashley recalled her heartache and said she never thought she would be divorced before the age of 30.

She teased that their romance has been going on for quite some time as she shared a huge gallery of smitten photographs and videos of them both

She teased that their romance has been going on for quite some time as she shared a huge gallery of smitten photographs and videos of them both

In a caption, she declared her love for her new partner as she gave a rare insight into their blossoming romance

In a caption, she declared her love for her new partner as she gave a rare insight into their blossoming romance 

'I [didn’t] think that would be my life – having that experience before 30,' she admitted. 

'Relationships are so often a mirror - when they're tough, I think that's some of the best material for self-growth.' 

Ashley confessed that getting to a place where she could reflect back on her split from Buck in a 'lighthearted manner' took some time. 

'It’s definitely taken me a while to... you know, to not be able to burst into a ball of tears simply by telling a story,' she added. 

Ashley and Buck dated for seven years before tying the knot in Los Angeles in 2015. They publicly announced their decision to separate in January 2017. 

Meanwhile, Brazilian model Alessandra has also had a high-profile love life over the years. 

She was engaged to businessman Jamie Mazur from 2008 to 2018 and they share a daughter Anja, 16, and son Noah, 12. 

Alessandra has also had notable relationships with Nicolo Oddi, Richard Lee, Marcelo Boldrini and Giovani Borghetti in the past.

Buck used to be married to model Ashley Hart (both pictured) but the couple went their separate ways after two years of marriage in January 2017

Buck used to be married to model Ashley Hart (both pictured) but the couple went their separate ways after two years of marriage in January 2017 

Ashley is the sister of Victoria's Secret model Jessica Hart (both pictured in May 2019), who Alessandra has rubbed shoulders with in modelling circles over the years

Ashley is the sister of Victoria's Secret model Jessica Hart (both pictured in May 2019), who Alessandra has rubbed shoulders with in modelling circles over the years

She was most recently linked to Alexander Smurfit earlier this year before her relationship with Buck came to light.

Alessandra is one of the longest-tenured models with Victoria's Secret and has walked more than 15 runways with the brand.

She also returned to the catwalk for the 2024 Victoria's Secret Fashion Show, its first since the brand retired the annual show in 2019.

Alessandra joined a whole host of household modeling names including Kate Moss, Tyra Banks and Carla Bruni in returning for the show.

Alessandra's very first time appearing in the Victoria's Secret Fashion Show was back in 2000 at Cannes alongside modeling icons Tyra Banks and Gisele Bündchen.