Serena Williams never misses a chances to show off her dance moves, and a major social media milestone is no exception.
WTA Staff

Serena Williams never misses a chances to show off her dance moves, and a major social media milestone is no exception. The World No.1 just crossed the four million followers mark on Instagram, and she debuted a move that she dubbed the "4 million follower dance."

So how exactly does one react when reaching that many million followers?

Click right here to find out!