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Kim Kardashian will out-do the royal wedding, sister says

Kim Kardashian, left, and Kris Humphries. Getty/CBS

(CBS) Kim Kardashian just got engaged to basketball player Kris Humphries, but sister Khloe is already starting to talk about the nuptials - and she says the wedding will be a big one.

So big, in fact, she says it'll be on par with Prince William's wedding to Catherine, Duchess of Cambridge.

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"It's going to be royal wedding number two," Khloe told E! Online on Wednesday. "I could only imagine Kim having the hugest wedding."

The TV personality has already made a decision about her bridal party, according to the report - Khloe and eldest sister Kourtney will both be maids of honor.

"I made both of them my maid of honor," Khloe, who married Los Angeles Lakers player Lamar Odom in 2009, said of her sisters. "You can't choose."

Humphries, who plays for the New Jersey Nets, proposed to Kardashian last week, presenting her with a 20.5-carat diamond ring. According to E!, the sparkler is worth $2 million.