Kristin Cavallari Talks Being a Working Mom: "I Miss My Kids A Lot"
Dorit Thies
Reality Stars -- Then and Now

Kristin Cavallari is doing her best to have it all!

The "Laguna Beach" alum covers the new issue of Modeliste Magazine (via E!), where she opens up about finding that perfect work-home balance.

Now a mom of three, Kristin is definitely feeling more pressure when she is away from her children ... and even when she is home.

"I think the hardest part of being a working mom is that I miss my kids a lot," she tells the mag. "I live in Chicago, but my work is always in New York or LA, so I always have to travel for my job. That usually means I'm gone for a couple of days at a time, but FaceTime helps a lot."

Between her and her hubby Jay Cutler's busy schedules -- he spends five months of the year at training camp for the NFL -- it sounds like the blonde beauty misses having some time to herself.

"When you finally have kids, you realize how selfish you are," she says. "I think we are naturally selfish beings. When you have kids, that can kind of be a shock at first. I think just trying to make time for yourself is very hard. Especially now that I have 3, finding that time can be very difficult."

Though she has her hands full with her daughter Saylor and sons Jaxon and Camden, the 29-year-old credits her children for helping her get through tough times ... especially after her brother Michael was found dead from hypothermia after he went missing in December.

"The most rewarding part about having kids is there's just so much more love in your life," she reveals. "I finally feel like I have a real identity. I feel like I have a purpose here in life now. I'm a mom to these three amazing little babies and my whole world just kind of opened up."

And for just giving birth to her third child 7-months ago, Kristin says svelte physique is thanks to her personal trainer.

"I don't do any cardio," she declares. "For me, it's just about building muscle and maintaining the little muscle that I have. The more muscle you have, the more fat you burn." She's sure looking better than ever!

What do you think about the "Hills" star's candid comments? Sound off below and check out the gallery above to see more of your favorite reality TV stars then and now!

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