Kim, Kourtey, and Khloe Kardashian's hairstylist Jen Atkin spills on their style secrets. Credit: Noam Galai/; Todd Oren/Getty (inset)

When the Kardashians are in need of a glam hairstyle, they turn to Jen Atkin.

The celeb hairstylist, who also works with Jessica Alba, Katy Perry, and Sofia Vergara, is responsible for the Keeping Up With the Kardashian stars most glam hairstyles (Just take a look at their Instagram feeds to see a few of her creations).

And while the sisters are often grouped together, Atkin, a stylist for Clear Scalp & Hair Therapy, appreciates them for their unique styles. "I love how Kim is so fashionable," Atkin tells Us Weekly. "She has a look set for her vibe. She'll have the latest and greatest from every fashion designer, and we work around that."

For Khloe, 29, Atkin pushes the envelope. "I love how Khloe is so daring and will try things even if she's not sure," Atkin tells Us. "She's open to do whatever. We'll pull inspiration pictures and go off of whatever wardrobe she's wearing."

As for Kourtney, 34, Atkin says she's a mix of her two younger sisters. "Kourtney is eclectic but so on point. She's not afraid to wear a cool turban," Atkin says. "So she's kind of a mixture of the two."

While the stylist will try out updos, waves, and smooth styles on the sisters, there's one look she can't see on the Kardashians -- short hair. "I don't want to," Atkin tells Us. "I appreciate that all three of them love their long hair, and they're versatile with it. I love that. There've been moments with Khloe where we're like, 'Should we cut your hair into a bob?' And I'm like, 'You know what? No, because I know we'd be sick of it in two weeks.'"

That said, Atkiin conceded that anything's possible (after all, Kim, 33, and Khloe have both tried out blonde hair). "Maybe one day we'll get there, but they're known for rocking long hair, and they're comfortable in it."