How cute is that tiny little racquet? As if you don't already know, that's Alexis Olympia Jr., daughter of 23-time Grand Slam champion Serena Williams.

Mom came up with the clever caption, as little Alexis did some pensive focusing on the strings. This is the same five-month-old that watched Caroline Wozniacki win the Australian Open.

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Williams will be zoning in on her own racquet soon enough as she's set to make her return to competitive play next weekend for the U.S. Fed Cup tie against the Netherlands.

Serena's baby Alexis grabs hold of a tiny tennis racquet