The athlete announced on Wednesday she is pregnant with her first child

The star took to Snapchat to share a photo of her bump in profile

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Serena said in a caption she was 20 weeks along in her pregnancy 

Her fiance is Reddit co-founder Alexis Ohanian, 33; he proposed in January

Serena Williams is pregnant with her first baby.
The tennis star, 35, made the announcement on Wednesday where she showed off her pregnant belly on Snapchat. 

Serena had a small baby bump, which she showed in profile as she held up her phone to a mirror. The suit had two gold buttons and a cut out on the side with narrow straps.