Serena Williams writes heartwarming letter to her unborn child

Tennis superstar, Serena Williams who broke the internet few days ago when she revealed that she was 20 weeks pregnant, has written a heartwarming letter to the unborn child in her womb.

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The world number one took to Instagram to pen down the lovely write up, as she takes a maternity break from tennis.

My Dearest Baby, 

You gave me the strength I didn’t know I had. You taught me the true meaning of serenity and peace. I can't wait to meet you. I can't wait for you to join the players box next year. But most importantly, I am so happy to share being number one in the world with you.... once again today. On @alexisohanian bday. 😉 from the world's oldest number one to the world's youngest number one. -Your Mommy