And, two weeks later, the proud mum has shared the first photo of their daughter with fans on social media.
Taking to Instagram, Serena said she gave birth to her daughter and only left the hospital after six days.
Tennis star Serena Williams has shared the first photo of her almost two-week-old daughter with the world.
She finished off the clip with a heartwarming bio for her little girl.
Serena took to Instagram and her Instagram Story to document her pregnancy journey.
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It ends with a few stats about Williams, 35, and Ohanian's baby girl, revealing that she was born weighing 6 Lbs., 14 Oz.
The final part of the mini-documentary is a clip from the day Williams and Ohanian took their baby home from the hospital.
And, amazingly, she's listed as having won one Grand Slam title, seeing as her mum was pregnant during the Australian Open.
She accidentally announced her pregnancy in April by publicly sharing a Snapchat of her baby bump that was originally meant for private viewing.
The baby girl is named after her father, Williams' fiancé Alexis Ohanian.