Question: Who got the most followers on instagram in the world?
Disambiguated questions and answers: question: Which brand account has the most followers on Instagram in the world?
Which person has the most followers on Instagram in the world?
answer: @instagram
Cristiano Ronaldo
question: What individual person has the most followers on Instagram?
What brand has the most followers on Instagram?
answer: Cristiano Ronaldo
Instagram
Natural Questions answer: Cristiano Ronaldo (from the Wikipedia article "List of most-followed Instagram accounts")