Kim Kardashian pays millions in fine for illegally promoting a cryptocurrency.

As the US financial market regulator SEC announced on Monday, the 41-year-old agreed to a payment of 1.26 million dollars (around 1.29 million euros).

The successful businesswoman advertised the EMAX cryptocurrency offered on the EthereumMax website on her Instagram page without making public that she received $250,000 for it.

The $1.26 million payment includes a $1 million penalty and a refund of the $250,000 payment plus interest, the agency said.

Kardashian will also stop promoting cryptocurrencies for three years.

"This case is a reminder that when celebrities or influencers endorse investment opportunities including cryptocurrencies, that doesn't mean those investment products are right for all investors," said SEC Chairman Gary Gensler.

"We encourage investors to consider the potential risks and rewards of an investment in light of their own financial goals."

In addition, the case is a reminder that celebrities have to make it public if they are paid to advertise financial products, the Financial Markets Authority said.

Kardashian isn't the first celebrity to be targeted by the SEC for deceptively advertising cryptocurrencies.

Before her, boxer Floyd Mayweather, rapper DJ Khaled and actor Steven Seagal, among others, got into trouble for promoting cryptocurrencies without making their pay public.

Kardashian rose to fame with the reality TV show Keeping Up With the Kardashians.

In recent years she has built up a veritable company empire, with clothing and cosmetics brands as flagships of her portfolio.

In September, the 41-year-old also announced the founding of an investment company called SKKY Partners.

The American financial magazine "Forbes" estimates her fortune at 1.8 billion dollars.