It was hard to believe that Gisele Bündchen had recently given birth when she flaunted her trim post-baby body on Sunday.

The 44-year-old model was spotted out on their $1.2 million yacht with her partner Joachim Valente — who spent some quality time with her daughter Vivian on the boat last week — as they sailed near Miami, Florida.

Gisele looked shockingly svelte on the aquatic outing, for which she and the father of her youngest child had invited friends aboard to go sailing with them.

The trip comes after the ex-wife of Tom Brady was revealed in early February to have welcomed her third child and first with Joachim, who was her jiu-jitsu instructor before becoming her lover.

Gisele looked stunning in a short black dress with a plunging neckline that put her bust on full display. 

The short dress also highlighted the 5ft11in beauty’s long, slender legs and toned arms.

Gisele Bündchen, 44, showed off her stunningly slim post-baby body while on her yacht near Miami on Sunday. She was joined by her partner Joaquim Valente and friends

She paired the minimalist outfit with a large straw hat to help block out the piercing sun, and she wore a set of dark sunglᴀsses.

She was pictured reclining on her side on a deck sofa while chatting with a female friend who wore a white crop top and baggy linen pants that contrasted with Gisele’s black ensemble.

In another pH๏τo, Gisele could be seen chatting on the deck with Joaquim while their friends gathered around.

Read More Gisele Bundchen shows off her post-baby body as ex Tom Brady is ‘casually dating’

The martial arts instructor kept things casual with an olive-green T-shirt and a dark baseball cap that he wore backward.

Last month, the maker of Gisele and Joachim’s 44-foot-long ‘Schaefer V44’ powerboat revealed they had purchased the craft in a celebratory Instagram post.

It was unclear if any of Gisele’s children were on board with the adults, including her 15-year-old son Benjamin and 12-year-old daughter Vivian — both of whom she shares with ex Tom Brady — as well as her young son, who reportedly has River as his middle name.

Gisele and Joaquim have been closely entwined ever since she hired him as her and her children’s jiu-jitsu instructor in December 2021.

Less than a year later, in November 2022, she was spotted vacationing with him in Costa Rica, just two weeks after she and her ex Tom had finalized their divorce. 

She wore a busty black dress with a straw hat and large sunglᴀsses. Gisele was pictured deep in conversation with her love Joaquim while friends were gathered around

It was hard to believe that Gisele had recently given birth, based on her svelte frame. TMZ reported in early February that she and Joaquim welcomed their first child together, though the exact date isn’t known

Despite the quick time, Gisele has adamantly denied having an affair with her current love while she was still with Tom, and she claimed to the New York Times that she and Joaquim only started dating in the summer of 2023. 

‘This is something that happens to a lot of women who get blamed when they have the courage to leave an unhealthy relationship and are labeled as being unfaithful,’ she told the publication.

Earlier this month, TMZ reported that Gisele had opted to turn down her coveted invitation to this year’s Met Gala.

Read More Tom Brady sent stark message by ex-wife Gisele Bundchen on his love life

Although she would be a natural presence on the red carpet, she reportedly wanted to stay home to spend time with her young child. 

According to People, Gisele didn’t waste much time after giving birth before she returned to her regular fitness regimen.

The catwalk star has reportedly been ‘slowly’ reintegrating yoga into her routine as well.

A source told the outlet: ‘Gisele’s doing well. She seems very happy and content. She just focused on her family and rested for the first month after the baby arrived.

‘She enjoys shorter outings with her older kids and Joaquim. Her older kids are helpful with the baby. Gisele tears up when she sees all the kids together — she still can’t believe she has a newborn. She feels very blessed.’

Not long after giving birth, the model has already gotten back to a fitness regime and has ‘slowly’ started yoga once again, per People

Gisele and Valente first started dating in June 2023, but Tom Brady ‘never imagined’ that the model would have a child with Joaquim, per Page Six; Brady and Bundchen seen in 2018 in NYC

It was revealed in October of 2024 that Gisele was expecting her third child, which reportedly left her ex ‘stunned.’

The blond beauty was married to the NFL star from 2009 until their 2022 divorce.

Tom left fans wondering if he was referring to his former marriage when he shared a cryptic quote that referenced ‘failing’ and ‘coming short’ shortly after his ex’s pregnancy was revealed. 

Read More Gisele Bundchen, 44, ‘rejects Met Gala invite’ for a very personal reason

According to Page Six, Brady ‘never imagined’ that his ex would have a child with her martial arts instructor.

Earlier this month, a source told Entertainment Tonight that Tom has been taking steps to bet back into the dating scene.

He was said to be ‘casually dating,’ though the source noted he wasn’t ‘completely closed off to the idea of getting married again’ in the future. 

‘He is doing great and focused on everything he has going on,’ the insider added.

The insider also claimed that Tom and Gisele’s children Benjamin and Vivian have been enjoying having a new baby brother around. 

‘The kids are in love with their new brother, especially Vivian. They can’t wait until he’s old enough to walk and talk and they are happy for their mom,’ the source added; Benjamin, Vivian and Brady’s son Jack, 17, seen above 

And in February, Brady reportedly rekindled his romance with Russian-born model Irina Shayk; seen in 2024 in Milan 

‘The kids are in love with their new brother, especially Vivian. They can’t wait until he’s old enough to walk and talk and they are happy for their mom,’ the source added

Valente is ‘very close’ to Gisele and Tom’s children and is the ‘best stepdad’ to the pair.

Read More Gisele Bundchen is bra-free in first campaign since welcoming 3rd child

In regards to fatherhood, the insider stated that, ‘It comes naturally to him. He is protective and sweet, but also lots of fun. He thinks Gisele is the greatest mom.’

And in February, Brady reportedly rekindled his romance with Russian-born model Irina Shayk.

The two stars had a brief four-month fling which came to an end in October 2023.

However, a source told Page Six: ‘Tom and Irina have started dating each other again and are open to see where things go.’

Another insider added, ‘They’ve been talking on the phone. Neither one is in a serious relationship right now, so why not take a trip.’