Kristin Cavallari Fires Back at Haters Commenting That Her Children Are Too Skinny

Kristin Cavallari isn't taking accusations that she's not giving her kids enough to eat lightly.

The 29-year-old former Hills star got involved in an Instagram controversy recently when she posted a picture of her two sons -- 3-year-old Camden and 2-year-old Jaxon -- celebrating the Fourth of July on the beach with their father, Chicago Bears quarterback Jay Cutler. But she clearly got more attention for the photo than she anticipated, when some followers took notice of how skinny Camden and Jaxon appear.

WATCH: EXCLUSIVE -- Kristin Cavallari Opens Up About Brother's Death and Scary Car Accident: 'I Have Such an Appreciation for Life'

"Sorry that the truth hurts. But the poor child's bones are popping out," one user commented. "Instead of getting mad at everyone for being alarmed look in to the child's diet."

"You're a terrible mother," another user wrote.

After being on the receiving end of more similar negative comments, Cavallari bit back.

"Yep, I starve my children," she sarcastically commented on her own post. "Just blocked the most people I’ve ever blocked in my entire life. Happy 4th hahaha."

She was also unapologetic on Twitter.

"I love that people are sending me articles about the dangers of being a vegan. Maybe send it to someone that's actually vegan," she cracked on Monday.

Cavallari also seemed unbothered in later Instagram posts, sharing pics of her snuggling with Jaxon and taking a makeup-free selfie with Cutler.

This isn't the first time the mother of three's parenting choices have come under fire. She made headlines in March 2014, when she revealed that she chose to not have Camden vaccinated during a Fox Business interview. She later defended her stance during her appearance on Bravo's Watch What Happens Live! two months later.

"There are very scary statistics out there regarding what is in vaccines and what they cause -- asthma, allergies, ear infections, all kinds of things. And we feel like we're making the best decision for our kids," she told host Andy Cohen. "Here's the thing: At the end of the day, I'm just a mom. I'm trying to make the best decision for my kid."

WATCH: Kristin Cavallari Reveals How She Stays Fit With No Cardio and a Weakness for Carbs

Last July, actress Jessica Alba spoke out about her experience feeling judged by "mean girl" moms after becoming a first-time parent to her now 8-year-old daughter, Honor.

"I know as a mom -- and as a new parent -- I felt confused. And I felt judged," she told Yahoo! Parenting. "Doesn't it feel like the mean girl thing from high school sort of just transforms into adulthood through motherhood? I think it has to do with hormones, right? I mean, this is the first time I'm actually saying this out loud, but that mean girl stuff happens when your hormones are going crazy."

"I think we as women -- and as moms -- we need to show younger girls that we support each other no matter what," she added. "And to try and not be so judgmental."

Watch below:

Jessica Alba Talks Feeling 'Judged' By 'Mean Moms'

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