The Ikea founder told a Swedish television station recently that he buys his clothes at thrift shops.

“I don’t think I’m wearing anything that wasn’t bought at a flea market,” Kamprad, 89, said. “It means that I want to set a good example.”

This isn't the first time Kamprad -- whose family fortune totals about $73 billion, according to The Guardian -- has made headlines for his penny-pinching. It's been previously reported that he only flies economy class, takes the bus and eats $4 Swedish meatballs at the Ikea cafe. He also takes home the salt and pepper packets.

In the documentary, Kamprad attributes his frugality to his modest upbringing.

“It’s in the nature of Smaland to be thrifty,” the frequent Forbes-list billionaire said. Smaland is the province in Sweden where Kamprad grew up.