Gisele Bündchen Bares (Almost) All

By Callie Schweitzer

07/16/2008 at 11:20 AM EDT

Gisele Bündchen poses in barely-there jeans for V Magazine's 2008 fall preview issue – and she doesn't hold back in her interview, either.

As for her skimpy outfit – jeans missing most of their seat – Bündchen, who turns 28 on Saturday, jokes that she is demonstrating "how to wear denim without wearing denim." But she'd never wear them in real life. "I'm a tomboy and I'm a goofball," she says. "Never in my life would I wear anything close to those clothes. After the shoot I take the clothes off, go home, and do whatever I want. For me it's just a job."

Renowned photographer Mario Testino shot the images in April on a Malibu beach. "Only Mario could make me take those pictures," says Bündchen. "He was the first photographer that shot me when I started ... People are going to say my butt is showing too much in these – but, I’m sorry, my butt showed more in Victoria's Secret. For seven years my butt was in every catalog.”

The Brazilian-born model, who dates New England Patriots quarterback Tom Brady, also slammed paparazzi, who snapped their own photos of the shoot.

"They sit in front of my house all day ... Believe me, if I had my way I would go around punching people," she says. She adds that she feels media saturation about celebrities distracts the public from more serious issues.

Asked about the brouhaha over Miley Cyrus's Vanity Fair photos, she says: "[Politicians] can go around doing what they want and no one cares because we're more concerned about some 15-year-old girl holding a sheet in a picture."

But when she's working, Bündchen keeps her opinions to herself. "When I go to a job ... I just do what is expected of me and become the persona they want. When I'm there I'm not Gisele – 'cause believe me I have opinions about everything. I'm a canvas. I've accepted that."