When you add it all up, the Kardashian Klan has billions.

But they can't have a Ferrari.

The reality show figures have been banned from owning the Italian supercar.

And they aren't the only ones.

The Spanish Daily MARCA reports that Ferrari has a blacklist of celebrities banned from acquiring a car -- but just don't call it a blacklist.

According to Ferrari, there's no blacklist banning people from acquiring their cars," they report. "However, the Italian car manufacturer reserves the option to carefully choose who gets access to its most exclusive units."

For example, Justin Bieber was banned from getting more Ferraris after he changed the color of a Ferrari he bought and then auctioned it off.  Ferrari is not fond of owners modifying their cars.

No word on what the Kardashians did to get on the list.  Or Floyd Mayweather, who's also said to be banned from ownership.