Chrissy Teigen has Kristin Cavallari's back.
After Cavallari was criticized by some users on Instagram because her sons, 3-year-old Camden and 2-year-old Jaxon, apparently appeared too skinny in a Fourth of July beach picture she posted, Teigen took to her own Twitter to stop the mommy hate.
"I will never know why parents criticize others so harshly, knowing they'd go insane if they were on the receiving end ALLTHETIME," Teigen tweeted on Monday. "NO parent out there thinks they're perfect. I loathe these sh**head commenters. Who would want to make someone feel horrible for fun?"
"Anyway, love you @KristinCav and screw everyone's bored a**!" she added.
WATCH: Kristin Cavallari Fires Back at Haters Commenting That Her Children Are Too Skinny
Teigen, of course, has been on the receiving end of plenty of judgment herself on social media since giving birth to her daughter, Luna, in April. After some criticized the 30-year-old model for stepping out for a date night with husband John Legend to The Nice Guy in West Hollywood, California, just two weeks after giving birth, Legend took to Twitter to defend his wife.
"Funny there's no dad-shaming," Legend, 37, tweeted in May. "When both of us go out to dinner, shame both of us so Chrissy doesn't have to take it all. We'll split it."
Meanwhile, it looks like Cavallari, 29, doesn't need help when it comes to standing up to her haters.
"Yep, I starve my children," the mother of three commented sarcastically on her own post. "Just blocked the most people I've ever blocked in my entire life. Happy 4th hahaha."
... And in case you're wondering, she's not vegan.
"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 sassily tweeted on Monday.
WATCH: John Legend Adorably Defends Chrissy Teigen Against Haters -- 'Shame Both of Us'
Last August, Hilary Duff talked to ET about her own experience being criticized for her parenting skills. Duff is a mother to her 4-year-old son, Luca, with ex Mike Comrie.
"Even before you have your baby, you can start feeling the judgment," Duff, 28, said. "And, you know, becoming a mother and that whole process is so special and so magical really, but it's also very isolating."
"I think a lot of the times you feel like you should have all the answers and you feel like you should know how to do everything and nothing should go wrong," she added. "You put so much pressure on yourself, and it's really kind of a lonely place to be. So I think women and families need to boost each other up instead of, you know, bullying one another."