ET's exclusively inside Pacha NYC nightclub with Kim, Khloe and Kourtney Kardashian as they launch their official, prepaid Kardashian MasterCard on Tuesday night and dish about who's the biggest spender!
When ET asks the sisters which of them goes through the most green, Kourtney wastes no time volunteering Kim's name: "No question it's Kim," she says.
Kim nods her head in agreement, admitting it's true.
The sisters say 2010's been a great year for them, and the MasterCard launch may very well be the icing on the Kardashian cake.
"We're excited that so many people were so into this idea and came out to support us," Kim says.
Watch our video for more!