Gisele Bundchen goes topless beneath white pantsuit at Watches and Wonders event in Switzerland

Gisele Bündchen went topless beneath her white pantsuit while attending the opening day of luxury watch fair Watches and Wonders Geneva in Switzerland on Wednesday.

The 43-year-old IWC Schaffhausen brand ambassador paired the company's $20,300 'Portugieser Chronograph' watch with a double-breasted cropped blazer over super-wide leg trousers and peep-toe heels.

Gisele - who relies on stylists Mela Selva and Katie Mossman - accessorized with gold earrings with her signature bronzed make-up and her beautifully blown out voluminous mane.

Bündchen - who officially retired from the runway in 2016 - has fronted IWC Schaffhausen since 2022 alongside actors Bradley Cooper and James Marsden, F1 superstar Lewis Hamilton, and freestyle skier Eileen Gu.

'What I love about this watch is that you can wear it sporty. I'm a sporty girl. I'm always, you know, moving around. But it can also be really cool in the evening, like you can go from the red carpet to everyday running around, mom-style. And it looks good with everything and it's very comfortable,' the sixth-generation Brazilian bombshell told Hodinkee last December.

Gisele Bündchen went topless beneath her white pantsuit while attending the opening day of luxury watch fair Watches and Wonders Geneva in Switzerland on Wednesday

'I think my son could wear this watch or my daughter could wear this watch. It's unisex. And that's what I love about IWC watches. Most of their watches are like that...Of course it's also functional, let's not forget it's a tool! It keeps you on time and organized!'

Gisele was joined in Geneva by IWC Schaffhausen CEO Chris Grainger-Herr looking dapper in a grey double-breasted suit.

The Watches and Wonders salon runs through next Monday and 54 major watch brands will unveil their latest timepieces including Rolex, Patek Philippe, Cartier, Chopard, Hermès, and Chanel.

Bündchen's 256-page healthy lifestyle cookbook Nourish just debuted at No. 2 on the New York Times Bestsellers' list of advice/how-to/miscellaneous books.

'I'm very, very happy, grateful and surprised to be in #2 place on the @nytimes bestselling books list,' the CAA Fashion model - who boasts 34.5M social media followers - wrote on Monday.

'I just want to thank everyone who made this book possible. Thank you to all the chefs and people I met along this journey who taught me so much.'

Gisele even gave a rare shout out to her ghost writer Elinor Hutton, thanking her 'for writing this book with me.'

'Thank you to my beloved mother for teaching me that food is sacred and never to waste,' Bündchen wrote of Vania Nonnenmacher, who died at age 75 on January 28.

The 43-year-old IWC Schaffhausen brand ambassador paired the company's $20,300 'Portugieser Chronograph' watch with a double-breasted cropped blazer over super-wide leg trousers and peep-toe heels

Gisele - who relies on stylists Mela Selva and Katie Mossman - accessorized with gold earrings with her signature bronzed make-up and her beautifully blown out voluminous mane

Bündchen - who officially retired from the runway in 2016 - has fronted IWC Schaffhausen since 2022 alongside actors Bradley Cooper and James Marsden, F1 superstar Lewis Hamilton, and freestyle skier Eileen Gu

The sixth-generation Brazilian bombshell told Hodinkee last December: 'What I love about this watch is that you can wear it sporty. I'm a sporty girl. I'm always, you know, moving around. But it can also be really cool in the evening, like you can go from the red carpet to everyday running around, mom-style. And it looks good with everything and it's very comfortable'

Gisele added: 'I think my son could wear this watch or my daughter could wear this watch. It's unisex. And that's what I love about IWC watches. Most of their watches are like that...Of course it's also functional, let's not forget it's a tool! It keeps you on time and organized!'

Bündchen was joined in Geneva by IWC Schaffhausen CEO Chris Grainger-Herr (R) looking dapper in a grey double-breasted suit

The Watches and Wonders salon runs through next Monday and 54 major watch brands will unveil their latest timepieces including Rolex, Patek Philippe, Cartier, Chopard, Hermès, and Chanel

The CAA Fashion model's 256-page healthy lifestyle cookbook Nourish just debuted at No. 2 on the New York Times Bestsellers' list of advice/how-to/miscellaneous books

Gisele - who boasts 34.5M social media followers - wrote on Monday: 'I'm very, very happy, grateful and surprised to be in #2 place on the @nytimes bestselling books list'

Bündchen co-parents two children - son Benjamin, 14; and daughter Vivian, 11 - with seven-time Super Bowl champ Tom Brady, whom she divorced in 2022 after 13 years marriage

Fans can expect to see the 46-year-old retired NFL quarterback with their children attending his induction ceremony into the New England Patriots Hall of Fame at Gillette Stadium in Foxborough, MA on June 12 at 7pm (pictured March 29)

ESPN's Mike Reiss reported on March 31: 'There's typically a four-year waiting period for players to go into the Patriots Hall of Fame, but owner Robert Kraft made a special exception for Tom' (February 20 stock shot)

'And thank you very much to everyone who purchased and believes that a healthy diet can also be delicious, I hope you enjoy it and feel nourished.'

The Vivara paid partner co-parents two children - son Benjamin, 14; and daughter Vivian, 11 - with seven-time Super Bowl champ Tom Brady, whom she divorced in 2022 after 13 years marriage.

Fans can expect to see the 46-year-old retired NFL quarterback with their children attending his induction ceremony into the New England Patriots Hall of Fame at Gillette Stadium in Foxborough, MA on June 12 at 7pm.

ESPN's Mike Reiss reported on March 31: 'There's typically a four-year waiting period for players to go into the Patriots Hall of Fame, but owner Robert Kraft made a special exception for Tom.'