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."

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Olympics 2016, Rio 2016, Michael phelps