"Famous or not it’s odd for a 5 year old to be wearing lipstick and makeup," one person wrote.
"Does anyone else think that North West wearing that bright red lipstick is inappropriate?" another asked.
Following the backlash, Kim replied to a few Twitter user's comments, revealing that North chose the lipstick for the special occasion and that the exact shade will be coming soon to her KKW Beauty line.
Well, that's one way to reveal a new collection.
This article originally appeared on InStyle Australia