Khloe Kardashian joked in a new interview that her nieces Penelope Disick and North West could not be more different when it comes to their tutu preferences; plus, she opened up about having kids someday. Credit: Tommaso Boddi/WireImage; Craig Barritt/Getty Images

On Wednesdays, she most definitely does not wear pink! Khloe Kardashian revealed in a new interview that her nieces Penelope Disick and North West could not be more different when it comes to the color of their tutus.

"They go to ballet class together all the time," Kardashian, 30, told Refinery29 of the reality scions. "P’s always really girly, while North is normally in an all-black outfit. Kim recently put North in an all-pink leotard and tutu, and she texted me and was like, 'Look, I put North in pink just for you!'"

Unfortunately, Kanye West's little girl was not a fan. "North didn’t like it — North wanted a black tutu," Khloe told the website. "I just thought it was hysterical, because I was saying [to Kim], ‘Put the girl in some damn pink for a second!' And she’s like, 'I did it for you, and she didn’t like it! I know my daughter’s personality.' I find that so cute. North is going to be 2 in June, and she already knows what she wants. It’s hysterical."

Indeed, Kim posted multiple photos in February of her 22-month-old little girl looking at ease in a froufrou black tulle tutu, complete with a matching leotard, tights, and tiny pink ballet slippers. Her sister Kourtney Kardashian also posted a pic of Nori and Penny's matching (and black!) tap dancing shoes via Instagram.

Tap time! ????

A photo posted by Kourtney Kardashian (@kourtneykardash) on Feb 3, 2015 at 11:33am PST

Proud aunt Koko dished more details on her nieces' and nephew's personalities. "They're fashionistas in their own right. We definitely use them as inspiration, and the [Kardashian Kids] collection speaks to their personalities," she noted of Penny, Nori, and Mason.

"The boys line, especially, is very much all about Mason and his friends. When he’s with his friends, and they’re playing a game, it's so cute to look at how they’re dressed and how they put things together. It’s hysterical how kids have their own personalities, even at like 3 or 4. And, it's funny what they tend to like."

Kourtney and Scott's middle child, for example, "likes to dress herself," Khloe revealed. "What she’s drawn to is totally different than what North is drawn to. And, they’re not even 3 years old yet! It's so entertaining to watch that."

Khloe added that she hopes, someday, to recognize that in her own children. "Everyone says that when you have kids, you become crazy," she said with a laugh. "So I don't know what I’m going to be. But, I’m a really fun aunt, so I hope I’m going to be a fun mom! I like to have fun and be silly and not take myself too seriously with the kids, so I hope that will translate when I actually have my own."