Supermodel Alessandra Ambrosio has fueled speculation that she is engaged to her longtime boyfriend, jewelry designer Buck Palmer. The rumors intensified following recent Instagram posts where Ambrosio, 45, was pictured wearing a diamond ring on her left ring finger.
Ambrosio shared photos from what appeared to be a vacation, featuring herself in a bikini and celebrating Brazil's participation in the FIFA World Cup. In one of the images, a diamond ring is visible on her finger, though she made no direct mention of it or any engagement. She captioned the post in Portuguese, "Go, Brazil."
This is not the first time the couple has sparked engagement rumors. In the spring, Ambrosio posted photos with a gold band on the same finger, leading to speculation at the time. Sources close to the model indicated in April that while her friends had not been officially informed, the seriousness of Ambrosio and Palmer's relationship suggested a potential engagement.
Ambrosio and Palmer, who has experience designing jewelry, were first romantically linked in late 2024 at a party during Miami's Art Basel. Insiders at the time suggested Ambrosio felt a deep connection with Palmer, expressing a desire for a lifelong relationship. In 2025, she told Us Weekly that their connection stems from a shared "passion for life."
Ambrosio, a mother of two, has a daughter, Anja, 17, and a son, Noah, 14, with her ex-fiancé Jamie Mazur. Their engagement ended in 2018, ten years after Mazur initially proposed.
In a 2023 interview, Ambrosio discussed her outlook on life, emphasizing the importance of a positive attitude, living in the present, and cherishing time with loved ones. She also expressed future ambitions in the fashion industry, including hosting her own show and collaborating with emerging designers.