WARNING: NSFW

The supermodel is known for her famous body which is a main source of Heidi Klum's net worth. The 42-year-old just posted what might be one of her hottest, and raciest pics yet.

Not only is Heidi showing off her very firm backside, but she must have been a bad girl because she is getting spanked with a ‘Naughty Spoon!'

The black and white snap shows a man’s hand lifting Heidi’s super short denim mini-skirt and holding a spoon against her bare backside. “The Naughty Spoon” is written on the utensil. The photo’s caption simply reads, “Ouch.”

The mother-of-four clearly stays in shape as she exposed her firm butt while offering no further explanation as to where or why the photo had been taken, or who the man holding the other end of the spanking implement might be.

But despite the eyebrow-raising nature of the picture, this is not the first time Heidi has shared risque pictures via her social media accounts. Heidi frequently shares snaps of herself without tops.

It’s not exactly a secret that Heidi is one of the sexiest women in Hollywood. At 42, Klum is still stunning and bankable, currently being one of the judges in "America's Got Talent," a gig that increases Heidi Klum's net worth as she stemmed from modeling to a steady career in TV shows.

Following that Sports Illustrated cover in the late 1990s that made her a household name, it was expected that Heidi Klum's net worth would continue to rise for years, as the beautiful model still remains as one of the hottest icons on the fashion world.

She is currently the host, judge, and executive producer of the very successful reality TV design competition 'Project Runway,'so the very high Heidi Klum net worth proves that she is not just a pretty face but also a great businesswoman.

Currently, Heidi Klum's net worth is $70 million according to Celebrity Net Worth.