She's pregnant! Tennis star Serena Williams shows off her bump as she reveals she's 20 weeks along with her first baby

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. 

Williams wore a yellow swimsuit and said she was 20 weeks along.

The athlete is engaged to Reddit co-founder Alexis Ohanian, 33.

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.

Soon after she posted the image to Snapchat - as well as to Instagram stories - she deleted it, however.

A source has insisted to TMZ that Williams is indeed pregnant. Her reps have yet to confirm she is with child.

Source: Daily Mail