Serena Williams is pregnant with her first child

Serena Williams is having a baby.

Williams posted a photo of herself standing sideways with the caption "20 weeks" on Snapchat on Wednesday, then deleted it -- prompting widespread speculation that the 23-time major champion is pregnant.

Williams and Reddit co-founder Alexis Ohanian were engaged in December.

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This is the first child for the 35-year old athlete.

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