(CNN) -- Before she was even born, Micaela Bryan already had her own Twitter handle. Now just over 18 months old, she has more than 12,000 online followers. Some of them are among the biggest names in sport, including Serena Williams and Novak Djokovic. The top-ranked tennis duo have both had star billing on @micaelabryan -- and Djokovic is quite the regular guest. "Uncle Rafa" might have been the early inspiration, but his on-court rival "Uncle Nole" has made a serious play for her affection. "Every time Novak sees her it's really funny, he'll say, 'Micaela, my little buddy, how are you doing?' and he'll go and give her a hug," her mom Michelle Bryan told CNN's Open Court.
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Baby daughter of tennis star Bob Bryan has become a big hit on the internet
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Micaela Bryan had her own Twitter account set up before she was born last year
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She now has more than 12,000 followers, including the biggest names in tennis
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Micaela travels with the Bryan brothers and has snaps from all aorund the world
@placeholder loved him and that was a high-five moment for sure."