EXCLUSIVE: Kristin Cavallari Posts 'Glamorous' Breast Pumping Pic, Says She Can't Wait to Get Rid of It

'The Hills' star has some advice for first-time mothers.

Kristin Cavallari posted a breast pumping pic on Wednesday morning after admitting to ET that her breastfeeding (and pumping) days are nearly behind her.

"The glamorous side of the #BalancinginHeels #BookTour," the former Hills star captioned the Instagram photo.

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Cavallari gave birth to her third child, daughter Saylor James, in November, and was pretty adamant that three children are enough for her and husband Jay Cutler. "I'm done having kids," she told ET on Tuesday. "I got my girl, I'm good. We did it quick."

The 29-year-old reality star turned author added that she's not quite done with all the motherly duties that come with having a newborn. "I will still be breastfeeding for a few months," she said. "I'm looking forward to giving away my maternity stuff and breast pump. My girlfriends are all getting pregnant now."

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That being said, Cavallari did have some advice for those first-time moms looking to breastfeed. "The first baby is tough because it's the first one and everything is new. I was sleep deprived," she recalled. "You get through it. The first year is hard. Don't stress, especially if you are breastfeeding. That hurts your milk supply."

Cavallari has been traveling more lately to promote her new book, Balancing  in Heels: My Journey to Health, Happiness, and Making it all Work, and admits that it's difficult to say goodbye to her family. "It's still hard leaving my kids," she said. "I've been home for a few months, so it's the first time I've left Saylor."

But Cavallari says her career has always been an important part of her life. "Since I was 13, I've wanted to work. I always liked making my own money," she shared. "I know if I have something, I'm happier in general, and that makes me a better mom and wife."

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