Sexy At 41, Heidi Klum Flaunts Assets With New Lingerie Line: Her Diet And Fitness Secrets [Photos]

How does Heidi Klum stay so fit and fabulous at 41? She’s showing off all her assets by modeling for the popular Heidi Klum Intimates collection. And although it’s Klum herself now sensuously slipping into that sexy lingerie, she’s taking over as the supermodel for the collection previously branded under Elle Macpherson, known as “The Body,” reported E! News.

So just what does one wear at 41 to model lingerie? The answer if you have Klum’s body is, well, not much. She tossed off everything but a bra and panties for one photo, for example.

Add in tights and a garter belt, and Klum made it clear that she had nothing to hide. The mother of four also emphasized that she takes pride in her supermodel skills, and has no animosity towards Elle.

“I have many companies that come to me, but I wanted to be with someone who was as big as them, as established as them, as successful as them. You know, 25 years, that’s quite an empire and that’s quite an amazing business that Elle has created with Bendon,” Klum clarified.

Why make the switch? The head honcho of Heidi Klum Intimates explained that he believes Heidi can make the brand more accessible and successful, reported the Telegraph.

“It’s time to take the brand to even greater heights, and Heidi is perfectly positioned to do just that,” said Bendon CEO Justin Davis-Rice.

“Heidi embodies the spirit of our Intimates brand – smart, sexy, beautiful and fun – and this shines through in the Heidi Klum Intimates campaign images. We’re incredibly excited to have partnered with her.”

But how does a 41-year-old mother of four maintain that magnificent shape? Extensive bouts of exercise and a dedication to diet, thanks to her secret weapon that she cheerfully shares with younger supermodel Kate Upton. And that’s celebrity trainer David Kirsch, as the Inquisitr reported.

Kirsch believes in whole body workouts combined with a low-carb diet. Klum takes personal pride in Kate’s results from David’s guidance, using social media frequently to publicly praise her, noted the Examiner.

When David posted photos of them working out, Heidi sent out a written wolf whistle equivalent.

“You both look hot! RT @davidkirsch w/ Super hot KateUpton killin it in @heidiklum @newbalance #HKNB #gettingkirsched”

In addition to exercise guidance, David advises his clients to toss out the processed products. In accordance with Paleo low-carb diet guidelines, he’s particularly vigilant in advising them to eliminate white flour and sugar.

[Photo By Frank Micelotta/Getty Images]