The INSIDER Summary:

• Megan Fox posted a photo of her 4-year-old son wearing a dress on Instagram.
• Some commenters shamed Fox, but others applauded her for letting her son wear what he wants.
• Fox has previously said that she won't force her children to follow traditional gender roles.

Moms face constant judgment for almost everything they do, and people are especially critical of how famous moms dress their kids.

Although Megan Fox doesn't usually share much of her personal life on social media, the actress has become the latest celebrity mom to have her parenting skills scrutinized by online bullies.

On July 31, Fox posted an Instagram picture showing Polaroid photos of her husband Brian Austin Green and their sons Journey (who turns 1 on August 4), Bodhi (3), and Noah (4).

In one of the Polaroids, Noah, her oldest child, was wearing a dress featuring an image of Elsa, the main character from "Frozen." The photos also showed that both Noah and Bodhi have shoulder-length hair.

Some people were outraged by the image of Noah in a dress and left hateful comments on the photo.

"Why is the oldest boy wearing a dress?" one commenter asked.

"I JUST THINK IS NOT A GOOD IDEA...BOYS LEARN VERY QUICKLY AT THAT AGE AND CAN START THINKING IT'S OK," another wrote.

Others accused Fox of being a bad mother and forcing her son to wear a dress.

"Another Hollywood weirdo mom... so disgusting you allow your son to wear princess dresses," a user wrote. 

"She definitely is determining that they be girly with those dresses and haircuts, kids don't decide they want long hair," someone else commented. 

However, many people were quick to defend Fox and her children.

"Let kids be kids! They look beautiful and happy!" one person wrote.

"He's dressing up," another commenter wrote. "Chill out[.] I'm sure there's worse thing[s] a parent could do that [sic] let their little boy dress up in a Elsa dress."

Users also agreed that it's refreshing to see a mother give her children freedom to express themselves.

"Nice to see you let your kids dress how they want and have long hair," one user wrote.

Based on these reactions, it's easy to see why Fox might want to keep her personal life private.

In the past, Fox and her husband have made it perfectly clear that they're not enforcing gender roles on her children.

This means that the actress and her husband allow their three sons to dress and style their hair however they want to — even if it doesn't match up with what might be deemed "normal" for young boys.

"Noah wears dresses, so there are no rules," Fox said during an interview on Jimmy Kimmel Live in February 2016. "You can be whatever you want to be in my house!"

Later, in November 2016, photos of Noah and Bodhi wearing dresses and skirts went viral.

While it seems that there's always someone who has something mean to say on social media, it looks like Fox won't let that change her parenting style.

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