The world's cutest Olympic legacy is ready to watch dad race for the gold. Michael Phelps' son is on his way to Rio, and the 3-month old is sweeping the competition in the cuteness department.

The 22-time medalist will dive into his fifth Olympics on Monday, and Boomer Robert Phelps will be there to cheer him on. The tyke boarded a flight to the Marvelous City on Saturday, doubling down on his Team USA support with a patriotic baby blanket.

"This little man kicks butt when it comes to flying!" Nicole Johnson said of her bundle of joy. "He just sleeps and sleeps and eats and sleeps."

Tags: olympics 2016 Rio 2016 michael phelps