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With their own prepaid Mastercard, successful clothing boutiques and an autobiography due in days, what is left for the Kardashians to do?

"I have plans to take over the world really soon," Khloe, 26, said Tuesday their Mastercard launch bash in NYC. "So in about six months, Kim is going to be the leader and Kourtney is going to rule her, and I will rule both of them."

Joking aside, the ladies have a lot in store: For one, their autobiography, Kardashian Konfidential, is out the day after Thanksgiving.

"It will be really exciting for our book to come out on Black Friday," Kim, 30, said. "That’s something that we worked a really long time for as well, and we’re anxious for it to come out."

For Thanksgiving, they'll celebrate at mom Kris Jenner's house "slaving away in the kitchen all day," Kourtney, 31, said.

Kourtney and Khloe haven't even begun their holiday shopping, but they aren't worried about what to buy Kim.

"The best part about Kim is that she puts your presents on hold – the ones that she wants," said Khloe. "She’s the easiest to buy gifts for."

Said Kim, "I'll just say, "Everyone here’s the registry - it’s all on hold at all these stores.'"