Messi hits 500 million followers on Instagram, second person to achieve this milestone.

Messi's Instagram hits 500 million followers, trailing only Cristiano Ronaldo.

His follower count represents 20% of Instagram's active users, surpassing NFL players and all 154 major U.S. sports teams combined.

Posts related to the World Cup sparked a surge, with one garnering 76 million engagements. 📸🎉🌍

📸 (Image via getty images)