Erin Heatherton poses topless on a horse for Buffalo David Bitton's Fall 2014 campaign. Credit: courtesy of Buffalo David Bitton

She may be known for her angelic ways as a Victoria's Secret model, but Erin Heatherton's new gig for Buffalo David Bitton is a horse of a different color.

Leonardo Dicaprio's sexy ex, 25, stars with New York Jets wide receiver Eric Decker in the Fall 2014 campaign, debuting in September. While the duo's chemistry is palpable in the country setting, they're no competition for the sexy shots of Heatherton riding a horse bareback wearing only jeans.

"I am very excited for everyone to finally see our Buffalo ads. It was my first time modeling; so I was grateful to have Erin on set to give me some tips and make me feel comfortable," E! star Decker, 27, said in the press release.

Heatherton seemed impressed with the novice's first pass for the campaign. "Eric is the perfect example of what a man should look like in jeans," she said. "Just athletic, and you know put together, but really natural and laid back."