Williams who announced her engagement to Reddit co-founder Alexis Ohanian in December, previously surprised fans in April when she announced that she was expecting a baby.
The Tennis champion on Monday, posted a picture of herself on social media platform, showing fans how her baby bump was developing. see more photos below;
Speaking to Vogue in a recent interview, Serena shared that she and Alexis did not yet know the baby's gender.
'We're waiting. [It's] a surprise. We call it "baby,"' she said.
Also, Williams topped the rankings released on Monday by WTA for the third consecutive time even though she has not played since her victory in the Australian Open in January.