Serena Williams' emotional message to her unborn child
Ranked number one in the world, Tennis champion, Serena Williams, marked her return to the world number one ranking by posting an emotional letter to her unborn baby on Instagram.
Williams' social media post showed the 35-year-old in a black two-piece swimsuit that revealed her growing baby bump.
"My Dearest Baby, You gave me the strength I didn't know I had," Williams wrote on her Instagram account, as she hinted that she expects to be back playing next year.
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"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," it reads.
Williams is due to give birth in September, the month she turns 36 years old.
In December, Williams announced her engagement to tech entrepreneur, Alexis Ohanian and last week revealed she is expecting her first child and will not play again this year.
She was already expecting when she won her record-setting 23rd Grand Slam title at the Australian Open in January - where she beat her elder sister, Venus in the final.