Kim welcomed baby Chicago in January, Kylie had Stormi in February and Khloé gave birth to True in April.
On the weekend, Kim shared the most adorable photo of the cousins playing together, captioned, "The triplets".
While we're sure they are used to getting online hate, we don't think anyone could have seen this kind of hatred directed at a baby. True in particular.
Many people had a really big issue with the fact that True has a darker complexion to the other girls.
Some people were even accusing Khloe of lightening True's skin colour in photos.
Others brought up the conspiracy theory that OJ Simpson is Khloe's father.
Thankfully, some fans came to the Kardashians' defence, calling out the trolls who had the audacity to say such horrible things about a baby.
Khloe has yet to respond to the comments.