Serena Williams is pregnant with her first baby.
The tennis star, 35, made the announcement on Wednesday where she showed off her pregnant belly in an Instagram photo.
Williams wore a yellow swimsuit and said she was 20 weeks along.
The athlete is engaged to Reddit co-founder Alexis Ohanian, 33.
The beauty has been engaged to Alexis since December 2016. He proposed with a large diamond ring, which she showed off in January. They had been dating for only…