Khloe Kardashian Calls Sister's Marriage A 'Waste of Time' on 'Kourtney & Kim Take Miami' Premiere [VIDEO]

"Like, seriously, what a waste of your time," Khloe ranted about the fashionista’s 72-day marriage to Humphries.

The 32-year-old Kim is currently dating Kanye West and pregnant with his child, and isn’t thrilled with having to deal with divorce proceedings that have lasted much longer than her marriage.

Kim Kardashian candidly said on national television: "It's a really expensive dream that won't leave me alone. I'm annoyed about it, but I've taken it to a level where I'm like, I can't stress about this. The judge says we will be divorced in 2013."

Kardashian Odom, 28, doesn't let up, adding, "I don't know how she's so calm about this. He's suing her for an annulment. The only way to legally get an annulment is if there's some type of fraud involved. So Kris said Kim defrauded him to marry her for press.

"If you wanted to marry someone just for press, wouldn't you have picked someone that was actually popular?"

In Sunday night’s episode Kim Kardashian made it clear that she no longer wanted to discuss her divorce, becoming irritated when she walked in on her sister talking openly about her personal business with others.

While Kardashian Odom chalks it up to her sister bottling her emotions, she said Kim has “cried and cried for months” and now she just wants to move on.

But her divorce wasn’t the only drama to unfold on the premiere of the series; Kardashian also got drunk and thought that she had lost her kitten Mercy, a white teacup Persian cat that was a gift from her boyfriend West.

Luckily she eventually realized she had left the animal with her pal, Jonathan Cheban.

"She's never going to be able to take care of it," older sister Kourtney, 33, tells the cameras knowingly. "She's going to be so over this cat in five seconds."

"I had no idea that kittens weren't just already trained to go in the litter box. Anything messy just freaks me out,” Kardashian explained after having to clean up after the kitten’s accidents.

Check out new episodes of “Kourtney and Kim Take Miami” every Sunday night at 10/9c on E! network.