Now you know: Hilary Duff is not going to take ignorant Instagram attacks on the chin.

The Younger star, who's been enjoying Disneyland with four-year-old son Luca, posted a photo yesterday (December 13) in which mother and child share a peck beside a lazy river ride. "happiest place on earth! We love you @disneyland," she captioned the photo with more than a few heart emojis.

Sadly for Duff, not each follower shared her merriment, and a handful of trolls aimed to ruin the good vibes.

"Never knew hilary duffs a hillbilly. Say no to incest," one particularly pointed comment read.

But Duff didn't let the comment slide, and gave anyone who had anything negative to say about the image a rightfully dismissive piece of her mind.

"For anyone commenting that a kiss on the lips with my four year old is 'inappropriate' go ahead and click a quick unfollow with your warped minds and judgment," she wrote in a follow-up Instagram image. And, encouragingly, many fans had her back.

"Nothing wrong with kissing your child on the lips. I got a 10 year old and a 5 year old and I still kiss them on the lips. NOTHING WRONG WITH THAT!" one wrote, and another noted "Of course these trolls have experience with the mother/child relationship...they're typing these comments from their mothers' basements right now."

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