Kristin Cavallari is slamming haters who have criticized her kids' weight.

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The former The Hills and Laguna Beach star recently posted an Instagram photo of her presumed husband Jay Cutler and their two sons Camden, 3, and Jaxon, 2, playing at the beach while on vacation for the Fourth of July.

Instead of commenting on the cute family outing, followers focused on how skinny her boys looked, calling them bony and malnourished.

Cavallari, 29 -- who is known for implementing dietary restrictions in her household and promoting only the healthiest organic choices -- replied on social media, "Yep, I starve my children...Just blocked the most people I've ever blocked in my entire life. Happy 4th hahaha."

And talk hasn't died down. On Monday, Cavallari took to Twitter to write, "I love that people are sending me articles about the dangers of being a vegan. Maybe send it to someone that's actually vegan."

Cavallari and Cutler are also parents to a baby girl named Saylor James, who was born in November 2015.

Cutler, a 33-year-old NFL quarterback, proposed to Cavallari a total of three times because they had an on-again, off-again relationship for a while.

The Hills aired on MTV from May 2006 to July 2010. Cavallari also competed on Dancing with the Stars' thirteenth season and wrote the book Balancing in Heels.

Kristin Cavallari/Instagram