After the 32-year-old shared a photo of Saint in his auto seat, fans were quick to slam Kim over the fact the 18-month-old was in a forward-facing Safety 1st convertible vehicle seat. Ossification of vertebrae doesn't happen until between 4-6 years.
The 36-year-old television personality launched her eponymous make-up line earlier this year, and the raven-haired beauty has taken to social media to reveal she has been working on new powder contour products for her line.
However, the law also mandates that rear-facing auto seats are not applicable to children with a height of 40 inches or more, or a weight of over 40 pounds. Meanwhile, some fans appeared to be concerned as one replied: "Look, I'm not trying to judge or anything". All mom's aren't ideal and we all make mistakes. But clearly he isn't facing the right way. "Don't risk INTERNAL DECAPITATION or any other injuries if they could be prevented!"
Kim responded to the backlash in a Facts video on her app, which she filmed with her assistant Steph Shepp.More news: China sets world record, sends unbreakable code from satellite to Earth
Kim Kardashian certainly knows a thing or two about being trolled online: The internet has come for the reality star for everything from the tweet she posted in the wake of the Manchester attack to her choice of headwear.
"But what people didn't know is that Saint is now the weight and the height requirement to sit forward-facing".
And it seems having four-year-old North and one-year-old Saint has taught Kim three big life lessons - love, patience and selflessness.
Kim shares North and Saint with husband Kanye West. "No matter what it is".