The TV series Reality Keeping up with the Kardashians has just returned for its 16th season, which means that the family fights and the cheeky plugs of its product lines are once again on display.
The series has been running for more than a decade, and the family's fortune grows along with it.
Kylie Jenner, who when she started the series was only nine years old, is now 21 years old and is multi-millionaire.
With an estimated fortune of $ 1bn (£ 760m), according to Forbes magazine, the makeup mogul is by far the wealthiest member of the ubiquitous Kardashian clan, which is run by matriarch and "father" Kris Jenner.
However, the rest of his brothers are not exactly digging into the back of the couch for a loose change.
Kim Kardashian West is multi-millionaire thanks to her own line of beauty, perfumes and her "kimojis"; Kendall Jenner is an international fashion model; Khloe Kardashian has her own Good American jeans business and her older sister Kourtney Kardashian has benefited from product endorsements and collaborations with fashion retailers.
Spreading the personal and professional together with its surprising reach on social media platforms has been lucrative. The following followers of the sisters total a total of 537 million, which allows them to squeeze millions of dollars from the exploitation of pop culture.
Alexander McKelvie, professor of entrepreneurship at Syracuse University, also believes that the program is carefully written.
"If you had to badyze the program, you would think it was very spontaneous," he said.
"But most likely it is written and planned, and it is very well prepared to provide a clear and convincing message about what the producers and the Kardashian family want to reveal about them."
How have the Kardashians made their millions?
This season of "Keeping up with the Kardashians" focuses directly on a "scandal" involving Khloe Kardashian, her former partner Tristan Thompson and an alleged "connection" with Kylie Jenner's best friend, Jordyn Woods.
In the program, Khloe laments: "It just sucks, it had to be so public, I'm not just a TV show, like, this is my life."
At the time of the supposed appointment, the price of the Jordy Lip Kit, which was a liquid lipstick and a lipstick that was part of a wider collaboration between Kylie and Jordyn, was discounted by 50%.
Soon it ran out.
In an interview with The New York Times, Kylie Jenner said she did not know the price had been reduced, adding, "I would never do anything like that."
But the fact is that the scandal changed units.
"Essentially, their whole life is on display all the time and I think that makes them seem more identifiable to certain consumers," said Alison Gaither, beauty badyst at market research company Mintel.
In that first episode, the audience also saw Khloe in a photo shoot for her jeans company, Kim and Kylie discussing a perfume collaboration and Kim's husband, rapper Kanye West, participating in the act talking about their own Projects.
Coinciding with all this was the launch of Kourtney Kardashian's own lifestyle blog, Poosh, a bit like Gwyneth Paltrow's Goop website, but with much more exposure.
Like most of Kardashian's stuff, Poosh was announced through Kourtney's Instagram account, like Khloe's jeans business last year, and the social media platform was critical to business success. of Kylie cosmetics.
Ms. Gaither said: "What they have done better is really leveraging their social networks to create a brand that their fans really want, especially when we think of Kylie Jenner."
When Kylie first launched her lip kits in November 2015, she was able to market millions of fans directly through her Instagram account, which meant she could do without the marketing cost and get an instant reaction on what people were doing. they did or did not do it. T like.
Lewis Sheats, badistant vice provost of entrepreneurship at North Carolina State University, said: "If you think that 20 years ago for a businessman to get feedback from 20 customers, you may have to invite them or create a product and have it in their hands. or stand on a corner and watch them.
"On a social media platform, they can reach hundreds of thousands of people in a matter of seconds and get feedback on a concept."
Have the Kardashians always made money?
Some of the deals the family made in the early days of their fame, particularly with the older Kourtney brothers, Kim and Khloe, have not always been easy.
The sisters became the faces of a makeup brand called Khroma Beauty through a license agreement. But after its launch in 2012, the line was soon removed from stores in the midst of claims of copyright infringement.
It was renamed Kardashian Beauty, but even then the legal problems continued. It was only very recently that the family was able to free themselves from the situation.
They also launched the Kardashian Kard, a prepaid credit card aimed at teenagers and parents who wanted to track their expenses.
However, it was soon scrapped after Connecticut's former attorney general, Richard Blumenthal, said he was "deeply disturbed" by the card's high charges "combined with its appeal to financially sophisticated young adults."
Even now, not everything they touch turns to gold.
Kendall Jenner's season when Pepsi's face collapsed in a storm of rage after she starred in an ad that some claim trivialize the Black Lives Matter movement.
Pepsi released the ad the day after its broadcast.
Kim Kardashian West, mother of three (soon to be four) provoked the wrath of the US Food and Drug Administration. UU When he promoted a drug against morning sickness.
And family members have obtained a significant negative reaction by taking money to promote weight loss products.
The former presenter of Radio 1 Jameela Jamil, who has a campaign around the positivity of the body, described Kim Kardashian West as a "terrible and toxic influence on girls".
Where is the family?
The current family television contract runs until this year and at this stage it is not clear if the series will continue.
The numbers of the last season of the program decreased, since the 1.3 million that were tuned for the premiere were reduced to 851,000 at the end of his career.
If the program is coming to an end, would the family still have the same degree of success without it?
"They certainly would not get so much free publicity," said Professor McKelvie.
"But they have succeeded in finding other ways to stay in the media creating false conflicts, whether they are made by themselves or not, that's free publicity."