Alessandra Ambrosio steps out in tiny yellow bikini in Miami, but it’s her diamond ring that has everyone talking

Alessandra Ambrosio is once again turning a simple beach day into a major moment.

The Brazilian supermodel was photographed enjoying a sunny day on the beach in Miami, where she showed off her enviable figure in an eye-catching yellow bikini while inadvertently reigniting speculation that wedding bells could be in her future.

Ambrosio embraced one of summer’s biggest swimwear trends in an itsy-bitsy triangle bikini featuring a classic string silhouette.

The vibrant sunshine-yellow two-piece included a minimalist sliding triangle top with delicate braided black-and-yellow straps, paired with matching high-cut thong bottoms that featured the same rope-inspired side ties.

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The barely-there design highlighted the model’s toned physique while giving the timeless bikini style a modern, elevated twist.

Keeping accessories understated, Alessandra layered two delicate necklaces, including a gold chain with a green pendant, and wore classic aviator sunglasses.

© Backgrid/The Grosby Group

Her dark hair was left loose in natural, beachy waves after a swim, while stacked bracelets completed the effortless vacation look.

However, it wasn’t just her swimwear that caught fans’ attention.

© Backgrid/The Grosby Group

The 44-year-old was photographed wearing a large gold ring with a prominent diamond on her left ring finger, immediately sparking fresh engagement rumors surrounding her relationship with Australian jewelry designer Buck Palmer.

The sighting comes after months of speculation surrounding the couple.

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Ambrosio and Palmer, who went Instagram official in December 2024, have repeatedly fueled engagement chatter after being spotted wearing matching bands on their wedding fingers during romantic trips to Bali, Riviera Maya, Brazil, and other destinations.

Earlier this year, the former Victoria’s Secret Angel also raised eyebrows when she was seen wearing a simple gold band on the same finger, prompting similar speculation among fans.

© Backgrid/The Grosby Group

Although neither Ambrosio nor Palmer has confirmed an engagement, the dazzling new ring has once again reignited rumors that the longtime couple may have taken the next step in their relationship.

If true, it would mark a new chapter for the supermodel, who shares two children with her former fiancé, businessman Jamie Mazur, and has been enjoying a romance with Palmer since late 2024.