Serena Williams' Number One Fan Is Definitely This Sassy Little Girl

— -- The Williams sisters’ showdown is the talk of the U.S. Open today, but no one is cheering louder than 3-year-old Mimi, who claims her tennis skills are just as good as those of her idol, Serena.

“I look like Serena Williams,” sassy little Mimi says in the adorable Facebook video. “Because I just shoot it, and it goes way up in the air, BAM! I was just like Serena Williams.”

As soon as little Mykal-Michelle, who is nicknamed Mimi, finishes her tag line, she strikes a super serious pose that resembles the famous Heisman trophy, holding her beloved Sports Illustrated magazine off to the side while making a stern face.

Game, set and match, feisty Mimi is totally winning the Internet right now with her viral stardom at more than 905,000 views and counting.

Her newfound fame has served up an ace surprise, too. Mimi and her family are getting free tickets from Chase Bank to attend the U.S. Open finals at Flushing Meadows in New York City.