At the launch of her all-natural organic skin-care line, Sejaa, in home country of Brazil, the model told media gathered in São Paulo that she doesn't wear sunscreen because, "I cannot put this poison on my skin. I do not use anything synthetic."
When asked how she protects her prized body from the sun's cancerous rays, Bündchen replied that she only exposes herself to the sun before 8 a.m., when the rays are too weak to harm her skin.
(That has us wondering: Do all her sexy swimwear shoots and much-photographed beach vacation frolics happen before 8 a.m.? And what of that perfectly bronzed bod?)
Not surprisingly, the 30-year-old's comments have angered doctors and skin specialists worldwide.
"Sunscreen prevents damage to the skin and is of fundamental importance for the prevention of cancer. This is not any poison, when a public person makes a statement like this, it creates confusion," Dolival Loao, head of dermatology at the National Cancer Institute of Brazil told the U.K.'s Daily Mail.
Bündchen's own skin-care line doesn't include sunscreen, and instead uses unprocessed whole plant ingredients and only natural preservatives.
And it isn't the first time one of the world's most wealthiest models has caused controversy with comments about what she believes is the more healthy and natural way to live life.
After giving natural birth to son Benjamin, whom she had with football star husband Tom Brady in 2009, Bündchen said the birthing in her Boston home bathtub "didn't hurt in the least." She added, "I wanted to be very aware and present during the birth. I didn't want to be drugged up."
Bündchen says she prepared for the experience with yoga and meditation, and had her mother, husband and midwife create a tranquil environment by her bathtub side for the birth.
The supermodel then went on to tell Harper's Bazaar, "Some people here (in the USA) think they don't have to breastfeed, and I think, 'Are you going to give chemical food to your child when they are so little? I think there should be a worldwide law, in my opinion, that mothers should breastfeed their babies for six months.'"
We're beginning to think there should be a worldwide law that requires models to think before they speak.
Bündchen did apologize for her breastfeeding comments, saying that the pressures of being a new mom have her in constant search for what is best for her child.
We understand, Gisele -- but for now, we suggest you stick to what you do best: walking the catwalk.
And for another possible misjudgment on Bündchen's part, check out what haircut she made her hubby try out.